Shift point and gear ratio Rb race Engine ?

I have been racing small blocks for years I finally have a very stout 440 with 550 hp in a 2700 lb car . With peek torque around 4000 rpm and peek hp around 6000 rpm in most Rb Blocks I know this is a loaded question because there are so many variables. But what are you shifting at and what gear and tire size are you using for your trap rpm