4 bolt mains,13:1 J&P pistons,6" crowler sportsman rods,scat crank, short block. built by performance automotive, for Spook Cunningham, never raced. $3500.00 aluminum radiator for modified. $150.00. for info call 618-779-9053 618-639-3449, posting for aunt Sam.or phil @ 618-447-0782 or 618-729-1210 .