After a failed attempt to make this csrb work with E-85 I am stripping it down and replacing all the E-85 parts and going back to racing gas, I am going to change the boosters in the main body but need some info on what main metering blocks to use, I have narrowed it down to Quick fuel or BLP blocks but am having trouble figuring out which ones I need for a race only 2 circuit carb, it seems a little confuzing to me as to what part number's I need,, I do want to run a powervalve in the front but none in the secondarys, carb guru's??