How much power could you make with gt40p heads ported, ported cobra intake, 70mm throttle body, 1.7 rockers, x303 cam? All this on a 306 with a 9.5:1 compression ration? This is for a friend with an 87 t-top gt.
my friend is running a very similar combo, on a mustang dyno he made 265rwhp and 280ftlbs...


