What to do...

If it feels like it will keep pulling to 7500 and you modified the oiling system to keep up with it, then I would try a 4.56 gear (may seem small, but drops close 15 mph off your shift points. The base Victor 340 is probably the best manifold to get unless you want to get a strip dominator or an MP single plane and fill the carburetor pad in from a spread bore to a square bore pattern. The trick flow looks a whole lot like the super victor to me. It’s a little more “Street“ than “Strip“, but I sorta like an old Weiand 7510, too. Basically a large plenum accelerator. They’re almost impossible to find now, but I’ve known of a few fast drag cars that have used one.