Gang, I have a 72 GTO with a 1969 428 4 bolt main in it, it has a high rise and a holley carb, not stock. I'd like ot be able to install the ram iar set up under the hood, everything from the dual snorkel air cleaner and the upper steel pan and rubbers? Will it fit or do I need ot have the stock manifold and carb put back on?? Will this type of a set up fit with the after market manifold and carb?? Can anyone shed some light on this? Thank you!