I recently built an intake for my Chevy II 4-banger (Don't tell anyone, but it's really a 181 Mercruiser, with a 153 head) I had to make my own flange, bolted it to a used head, then welded it up from there. Clifford used to have factory made flanges, for you to make your own intakes from, for sixes, but don't know if they still do. I'm using two progressive two-barrels on mine, but you can use any carburetor you want for a pattern. I have water heat, too. If you want an idea of how I did it, e-mail me and I'll send you some photos of it.
