93K2500 4x4/4L60E. On 2nd rebuild in 2yrs Does anybody have suggestions on a beefier/Better options around the same cost or will a 65e work? should I just get a heavy duty rebuild kit?

You are better off rebuilding the engine if you intend to keep the car, the engine may last far longer if it is looked after and there are no unforeseen incidents. If you are selling a car then fitting a used engine can be cost effective, if you shop around wisely you can find a good engine for a reasonable price. Some buy salvage/donor cars to sort their own vehicle out from insurance auctions/salvage sales.
Rebuilding is usually more expensive but I would far rather have a rebuilt engine than a used one.
The thing with used units is that you cannot usually tell how well they have been maintained.
The choice is yours

The average cv axle nowadays is around $50 in the aftermarket world and around an hour in labor to replace. If you buy just the joint then someone has to rebuild your current axle with the newly purchased joint and is going to charge you labor to rebuild on top of removing and installing which will cost you more then just replacing the cv axle assembly. Its cheaper in most cases nowadays to just replace the the cv axle assembly.

Check your fluid level first. Is it low? Is it high? Either canose a problem. If it drives fine in 1st-2nd gears but is slipping in drive it can be several issues. first try draining the fluid, flush the system with clean fluid, may have service shop do flush, and replace the filter. This is the least complicated and least costly repair. If this doesnt fix the problem it sounds like your forward band may need adjusted, or replaced. depending on the transmission design it may not be adjustable. If it needs replaced, I suggest either buying the rebuild kit, around 300$, and replace all 3 bands and all clutches since they have to be removed anyway, or replacing the transmission, new up to 3k/used 50-500$ but no gaurentees it works

Well the reason they are telling you that is needs to be rebuilt is because the shift solenoid is bad in the first gear. As 1st and L are different gears they work in tandem. You should not tackle this issue if you are planning to make this repair on your own as this is very involved as you need to disassemble the transmission to make the repair and that rebuilding it would be a good idea since the rebuild will not only fix your issue but offer a warranty on the work.

time to put a new tranny in that jet most of the time it costs to much to repair it then replace it i have done may tranny rebuilds and replacements to me i would just tell you to replace it at least you will get a better warrentee and stuff

Cost to rebuild depends largely upon what exactly failed in order to need a rebuild.(which parts failed, what else is worn etc) There are many benefits to a good rebuild, the primary one is that once used, the actual casting has moved around and taken a set, making any machine work more accurate and less likely to change with use.
The drawback is that if there was a bearing or other failure that generated metal debris, unless the block is flushed out completely, that debris will eventually find it's way to a major component and cause another failure. Then, there is the actual quality of the work itself...that depends upon the knowledge and ethics of the rebuilder.
In most cases, you are better off finding a low mile engine from a scrap yard or buying a replacement engine from the factory (called a crate engine) Labor for R&R depends upon prevailing rate in your area.
You have much more to think about besides cost!!!

Very possible you have a internal fault in the drive gear only.I would suggest that you remove it and have it rebuilt.We have a local company that rebuilds them for around 300 dollars.

Yes,
The transmission shop have the tools to get in there and rebuild them. I would take to AAmco, Mr. Transmission , Cottman Transmissions. The reason for those places is they give a nation wide warranty on there work.
but a local transmission shop would be fine.
This is a very expensive transmission to rebuild. You are looking at parts and labor around $ 2500.00 . So the other option is to get a trasnmission order and replace it with out trying to rebuild it. That could be the best and cheapest way to go. The transmission shop has the resources to order a transmission for replacement.

Good Luck

Sounds like a bent fork in the transfer case. It is a common problem with your truck. The transfer case is a np236. If it just recently started doing this, the rebuild will cost around $800. If the 4wd has been acting up for a while, the planetary will probably need changed, which is another $200.

first check transm. oil level is ok,
second try by change transm. oil strainer , maybe this resolve your problem and save your money, go to another mechanic