Has anyone experimented with alternative carbs? I know about the edelbrock single carb conversion, which "seems" like it would be a good idea, but the reviews are really bad. I think the edelbrock is only a 40mm? I'm toying with the idea of a single carb conversion, but I don't want the edelbrock. I'm thinking about an S&S Super E. They use them on 883 sportsters. Why wouldn't they work on a thumper? Esp if the thumper was bumped up to the 762cc mark? The Super E is a 47mm carb with an enrichment lever, instead of a choke, thus less restriction in the venturi. I had a 96" stroker shovel head with an S&S ... I think it was a G, and we all know how difficult older Harleys are to start in cold weather, but with the S&S it was ZERO problem. The other major diff is the S&S has a butterfly instead of a slide. Does anyone know how that affects performance? Also, I understand the fact that 883 is way larger than 762, but the 883 only turns about 5000 rpm, maybe 6 if your lucky, what could a modded Rappy motor turn?...maybe 9000 rpm? Would that make up the difference in required CFM to feed the motor? I do know they use the S&S on hillclimbers, and being on a HD vtwin, vibration and incline shouldn't effect the performance of the carb either. Any ideas suggestions knowledge?