really the best advice i have for you, is to try a couple different ones. EVERYONE has their own opinion on which carb they like the best. not everyone will be the same. Personally i like the weber 2 barrel if you have money to spend, then next in line is the new production zeniths that come off of forklifts. I havent had a problem with either one of them with the exception of having to clean them out because trash got in them. But thats just my opinion, someone else will chime in with theres. If i had to pick between either an original zenith, or a tillitson. i would pick the tillie just because of personal experience.