I have an 88 gt with 126,000 miles. I'm keeping the bottom-end stock ,I have a set of gt40p heads that I am gonna put on. What cam is best for my application, keeping in mind that I want it to sound niiiiiiiiiice! Have bbk shorties,bbk H-pipe w/hi-flo cats, and magna-flo cat-back

 

i believe the e-303 cam is a nice cam i have the same exhaust except flows and running the aluminum svo heads thats the cam in mine it seems to work well is a good all around cam

 

TFS 1 or if you swap heads a TFS 2.

letter cams are garbage and out dated.

or you can always go custom grind...

 

and by swapping heads i mean TF heads, not iron garbage GT40P's that might give you 20 more hp.

get a used set of TF's or buy some new TF FAC heads.