440 stroker pistons

I got brand new Probe kit with 4.25 crank and 6.8 rods. It’s 12.5-1 with 75cc head and a .040 head gasket. Also a 543 kit that is 4.380. 11.75 comp with 75cc head and a .040 gasket. 7.100 rod and 4.5 inch crank. This assambly is balanced. I have the rings and bearings also. Kim