good comprehensive info! one of these 2 alum intakes are required: weiand "stealth" or edelbrock "performer". they used to allow iron intakes but I spoke with IMCA yesterday & he said he would call my track & OK an iron intake for me. OK so I have the stealth manifold & it is so tall that the hood will not come close to closing even with a lowprofile aircleaner housing. 408 swinger I will buy that early 360 iron intake from you. I believe that that would solve the problem! in the meantime I had been thinking of trying aftermarket "2266" black biscuit motor mount pads to lower the engine which are much thinner than the thick OE black biscuit pads but there is header to steering box/front pan to K member/rear pan to steering linkage potential issues with that & the season starts soon so I am under the gun. that's where I'm at so far. RR
