What kind of after market carbs can I put in a 1981 Delta 88 (I am getting rid of all the electronic stuff)

SOURCE: gmc vandura 1996, 3500 running rich

There could be all kinds of reasons your vehicle runs rich. It should be fuel injected not carborated. It could have a bad injector, bad air filter, o2 sensors etc. Have it scaned for the reason.

SOURCE: Vacume diagram / schematics for carbureter

you can get the schematic at autozone.com
online only

SOURCE: lack of power and speed.

Do you have any other modifications such as larger tires? The 1.3L engine puts out enough HP and Torque to run the stock size tires, but if you go up to a 31" or larger you will loose the ability to use 5th gear except for downhill runs with a tailwind. The stock carb is just too restrictive and is designed for fuel economy and low emissions.
If you do have stock wheels on it then the stock carb should be able to turn them. The problem may not be in the carburator body itself though. If any of the vacuum lines, solenoids, vacuum switches or EGR on the carb are defective or not hooked up correctly the Little Hitachi carb will not function correctly.

If you don't live in a state that has CARB emission standards then you should go with an aftermarket carb and a set of headders. The Webber is a popular and very easy replacement. Opening up the exhaust to about 2" with a set of headders will allow it to breath well and still have enough back pressure to give you low end torque.

SOURCE: 1988 jeep wrangler carb trouble

Ok... If you have any experience with carbs, you can get a rebuild kit. The most important part of any rebuild is to clean out obstructions in the passageways. Most times this can be done by using carb cleaner and spraying compressed air through them.Most times, just spraying cleaner into carb while installed is a waste of time as debris usually consists mainly of fine rust particles from inside the fuel tank, which will remain in the fuel bowl unless physically removed. If you can't do this, next best option is to search local junkyards for a similar unit. When replacing, cut the fuel line in a convenient place ahead of the carb inlet and put an aftermarket filter in the line, to prevent debris from re-entering and causing further problems. Most carbs have the adjustments blocked off. before using, it is wise to have someone who knows how to remove those plugs, do this for you so you can adjust it after installed.
Good luck

SOURCE: I need to know how to convert a throttle body carb to a 4 barrel

you can buy an itake to convert it you dont need to change the heads the 4 center bolts have just a slightly differant angle then change the distributar slap a carb on and put an inline fuel pump and your good to go