I installed a 350 in my s15 by myself. First of all you need to buy the JTR (jags that run) book. They have one for s10 v8 conversions. Check their website. You need a different tranny, new motor mounts(I made my set) new radiator(88 corvette), special oil pan(made from a stock s10 w/4.3L and the one off the v8. There is more but I don't remember. Feel free to ask questions.