[Dark_5.0]

Hey whats up, What you wanna do will work easy with speed density. Just one thing go with a 65mm TB instead of a 70mm, the 70mm is too big and will hurt your performance.

I have 65mm TB with 67mm egr spacer, ported GT-40p intake with a 3/8 inch phenolic spacer, Mac cai, ported polished and milled stock heads, E-303 cam, Aeromotive FPR, Jacobs ignition, 1 5/8 equal length BBK headers, O/R X-pipe with 2 chamber flows dumped, 3.73 gears and slicks, sub frame connectors. etc...

All of that and my speed density works like a charm. My 88GT convertible went mid 13's before the cam and TB.

I am dropping the engine in a 90LX and am hoping for mid 12's.

Later,