The T5 is not just a bolt in swap, but it's not that hard, even if you're not a mechanic. The 4 bolt holes need to be drilled out to 1/2 in. The original holes are a little smaller. (Metric) The input shaft and throw out bearing snout, both have to be shortened. I cut mine off with a cut off wheel. I have a 10 in flywheel and pressure plate, so my clutch shop hooked me up with a 9 1/2 in. disc for an older Astro van. He said the 1/2 in. differance would make it grab better. He was right. Then I had to have the drive shaft shortened.
If you get the T5 out of a S10, you won't have to do anything to the seat. If the T5 comes out of a car(Camaro), the shifter is farther back and will hit the seat. I think the bolt pattern for the transmissions has stayed the same all these years.
