cobrajet manifold with stock exhaust

[blackvette101]

Has anyone done the cobrajet swap on stock exhaust? it seems like everybody that has done the swap has headers on the car. if so what numbers are you guys seeing on 93 or e85?

 

[oldbones]

I did a CJ on stock manifolds. Midrange power will be a lot better with headers. I don't have pre-header hp numbers, but with headers, CJ intake, CJ 11mm cams and almost FOB it dynoed 466 rwhp and I'm a GT.