302 casting on a set of 318 heads

.030 deck pistons for a 9.59 deck but bore is 3.935!
Sealed Power Cast Pistons 235NP 60

for a 3.955 bore....
Silv-O-Lite Cast Pistons 1412-080

and youll need to machine pin holes to mopar size bout .050ish or bush your rod!
Scat Wrist Pin Bushings B927

yes its a bit of a redneck way to do it, but, it will get it done!