If you have a large pic, I'd like to check it out. I had bought a Carter 525 cfm to run when I added a 4 barrel, but it wasn't enough carb for the motor. So I bought a matching Carter 625 and figured I would run the two carbs on a progressive linkage. But... a friend of mine who's been building hot rods and sand rails for years advised that I go with two 500 and run them full time, not progressive, so I won't lean out the front cylinders. Edelbrock had a 500 (1803) that is set up to run dual quads so I just bought a pair of those.
I have the TTI headers.. they used my car for the initial test fit so I got the first set. Awesome headers.