Anytime, and several factors come into play when I set up a carb. Power, shift points, weight, vert, gear, altitude, fuel etc ALL determine the size/design just like in cams..........As I sad, if you want a Dommy then we can add skirted banjos to get the velocity up through the boosters and it will help but the billet supoports about 850-900 so far from my dealings with different racers and you wont have to do the manifold stuff we discussed..........I'll do whatever you want either way........