I believe I used felpro intake gaskets (this was a few years ago) for the most part i opened up the pinch as far as I dare, I opened the bowls up to 90 ish %, I did make a long vain on the roof but probably went a bit to high.
In the intake I raised the runners up 3 inches from the bottom of the sealed plate, knocked out the center divider and blended the relocated runners. There's a ton of plenum volume in that manifold. Now that I have access to machine tools I might do something stupid and put 3 2bbl throttle bodies on it. ( Probably won't run but will look awesome).