With a .039X4.18 gasket(FelPro 1008) a -35cc dish piston will net you 8.35CR
You sir are gonna need cu$tom pistons.
How much work have you invested in the 58cc heads?
Perhaps sell them and get 65cc heads to use the icon piston, in a 408 stroker..
Or use the 58cc heads with a flat top piston and run E85...
What blower, intake manifold are you planing on using?
Best of luck on your build!!
