hello this is a great site ive been reading up on here for a couple of months and thought i would join i have a 1983 olds cutlass supreme that i am in the process ofputting a sbc in it i have read alot about clam shell mounts i cant find them is this what i need to do the swap thanks in advance http://store.summitracing.com/partdetai ... toview=sku any help is appreciated