I'm looking at a '65 Dart BB track car build. I've received pics from several people that have done this swap and fabricated header for this combo. Not one has easy access to the plugs and most have some type of front tire rub went turning. The car has great rust patina and I'm thinking of removing the outer an inner fenders and running some cage outriggers to the front frame. I'd solve a lot of plumbing issues by fab'in some zoomie style headers. The motor will be a 440 with about 600HP. Any tuning issues or substantial lost of power with out collectors?