Carb Swap?

If you are looking for a new carburetor, I would suggest getting a quick fuel super street series 680cfm vaccum secondary carburetor. They have billet metering blocks and billet base plate's. They have changeable idle feed restictors and changeable idle air bleeds and changeable high speed bleeds. They also have changeable power valve channel restrictors. They have Teflon throttle shaft bushings, notched secondary floats and jet extensions on the secondary side.
I have one of these carburetors and when it comes to tuning, it's un-limited. You can tune these carburetors to run pretty darn good. They are pretty expensive, but you get what you pay for.