Hi there, I am new to this forum and any help/advise will be greatly appreciated. I have an 89 mustang, stock block, stock heads, 1.7 cran cam rockers, typhoon upper and lower, CAI, 24# injectors w/matching MAF, shorty tube headers, 3.73 gears, adjustable fp, 5 speed.

I am thinking of getting some GT40 heads off of a 96-97 explorer or going with aftermarket aluminum heads. Also thinking of cams.

I am new with mustangs and wanting to find a perfect match of heads and cams to go with stock block/piston. I want to make sure there is enough clearance between the valves and pistons.

What do ya'll think?