I've recently come into possession of a C6AF, 1.08 venturi, Autolite 4100 and would like to install it on my C code 66 (stock 289 w/ AT). Although this C6AF carb is built for an FE (390 or 428 w/ emissions & AT), and needs a rebuild anyway, can it be re-calibrated (built down ie> smaller jets etc) to C6Z* specs and be expected to operate correctly for a small block 289? I've done some searching through forum posts and have not revealed a definitive answer. Do the internal carb passages differ with EACH varying application or are they essentially the same body with varying jets, boosters etc? Do I have a "do-able" rebuild or an old paperweight? ANY input would be greatly appreciated. THX in advance.