I am building a 331 with a stock block for now. I have a complete DSS forged rotating assembly: -18cc pistons, H-Beams, 4340 crank, girdle, windage tray. I will be using AFR 185's, unported. I have an Edelbrock RPM II, unsure of cam right now. I will be adding a turbo, but plan to run low boost for now. Later, I plan to upgrade the block to a Dart Iron Eagle or possibly Boss. The car probably will see very little, if any, track time with the turbo. It will run NA for some time before I ever get the turbo.
I ported and polished the TB opening to match the 75mm Accufab TB and it came out very nice.