I'm putting together a .020 over N\A 231. The block is and 84 non turbo, I'm using turbo crank, 2 dot rods, arp main studs, arp head bolts, arp rod bolts, roller cam, ported iron heads, ross pistons (10:1). I'm going to spray 250hp Nitrous.
My question is do I need billet mains and if so...