Yes. Both years used the NV3500 (manual) or 4L60E (auto) for the S10 and 1500, and the NV4500 (manual) and 4L80E (auto) for the 2500 and 3500. Note that trying to swap out a 4L60E for a 4L80E is NOT a simple "plug and play" swap, in case you're getting that idea in your head.
It might not work as well, but possibly, it could work.
No not even close. Chevy redesigned the engine and transmissions in late 1999
No the wheels will not fit because they do not clear the brake calipers on the truck. The wheels maybe the same size but the rims don't have the clearance for the calipers
yes it will
Yes they will. Anything from the year 94-01 will fit with all parts of the truck.
Yes
Yes it will.
will a v6 4.3l engine fit in a 01 Chevy s-10 that has a 4 cylinder 2.2l
if its the same speed yes it should since the are both in the same generation. both the 98 and 01 have the same 3 and 4 speed trans.
none
Yes. '99-'01 same
Yes