Wanting to know how difficult it is to swap 4.3

Changing an engine in any car is a difficult task. Changing an engine in a 4.3 vortec 4wd is probably one of the most difficult trucks to do. In order to get the pan out, you have to remove the axle's in so you can get the front diff out of the way so you dont smash the pan on either the new and the old engine. You have to take off front driveshaft and the starter on the passanger side is nearly impossiable to get too. Good luck!

It's all going to be metric(of course) but about the only thing you need for removal is extra long extensions to get top bellhousing bolts.You have to reach from back end of tranny over the top.