well i would and have used scat crank and rods or compstar / callies crank and rods and use the SRP pistons . the canfield heads or other like afr dart thats old news on the small size on the crank snouts and i seen many get turn to fit better .thats is why i never used them .i have used many scats .i do not know how many .but i know how many i sent back over the years one set of rods for bad threads in one .and a bad finsh on the crank for a sbc blower engine