Why would the heads be shaved? Did the car previously blow its head gasket? Pi heads in general can be for 300 with new valves or you could find them cheaper used however just asking as to y anyone would remove materials from the heads in my opinion and logic that would make compression higher since u are closing the gap even more from the head to bkock. But im sure someone will chime in with better response and prices on heads
1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.