what size carb

Ok guys I building at 412 stroker and will be a street strip car. Going to be running a 3.55 gear . Engine will be 450 plus hp with the steel heads from Brian at IMM and will have a roller cam not sure of specs yet. The carb I have right now is a 715 cfm holley vacuum secondaries. Will it be big enough I'm thinking I need a bigger one. My carb was built by Promax in Indianapolis so not sure of exact specs but ran great on my 400 hp 360. It needs rebuilt so before I have that done should I upgrade