So I'm thinking about swapping an nv4500 into my 75 k5 blazer. It has a tbi 350 in it right now. I originally tried to put a 4l80e in it but he trans i bought was junk. Bought a t400 and it has the wrong output shaft for my tcase. So that being said I really want to have overdrive to get the mpg benefits. I really like having a manual transmission so this seems like the best thing for me. So mu question is what all do I need to complete this swap. My rig has a 4 inch lift. I have an np241 tcase that is 32 spline already. What year trans will be the best/easiest to convert? Does anyone have a write up or step by step and or part number list I may have missed during my searching?