Opps I believe I skipped this step. Just an old farm boy, who has a 1994 Chevy C1500 PU, MT8 manual trans, which I can't part with. Swapped out the V6 for a stock L31 Vortec long block with a square bore carbed vortec intake, with a TBI adapter on top of it 2 years ago. Trying to learn to tune this thing on my own, and enjoying the process.

PCM 16197427
L31 stock Vortec long Block
Heavy duty MT8 5 speed maual trans (I love this tranny)
3.43 gears