Bill, theres someone on here that rebuilds em and from what i hear does a good job too. Maybe he'll chime in here for ya. I had several but they went at the last MMW.
Small Block
hey i havew a couple good rebuilt thermo quads ill check the #s for cfm i know one is earlier model without all pollution hookups thanks brian 80.00 plus shipping 770-355-1680 let me know ill send you some pics