First I would like to say I have watched from the side lines on this forum since 2005 and this is where you get good information... My ? Im on my 2nd motor build and I would like to open up the budget a lil more the car that I would be working with is late 70 full size car ... The goal I would like to be is the best of bolt worlds so I'm looking at the msd atomic efi as the induction. Cubic inch wise I wanted to stay in he 355 or 383? Really would like to get 550 could the best of the best step out and lend a helping hand? And budget for the motor would be 4500-5500