Mike, I searched for AFB's, Edelbrocks, and holleys when piecing my dual quads together. I finally made my mind up and decided to go with 390cfm holleys. They were hard to find, but I did get 3 off ebay. My only concern with them is like you said. They will be a little harder to tune or work on. The center float bowels dang near touch. If some people actually finish paying their truck build bills, I'm hoping to get Fitech dual quad this winter. We'll see about that though.