Iv'e been running a Bendix with the adjustable main jet for a long time. It's not a big power maker like the S&S, but it's dependable and easy to work with. I just put an S&S Super E Shorty on an 1980/80" Sturgis model, that I put togather for a friend. The early S&S carbs got a lot of bad pr, But I was impresed with the quality of the kit. Everything was there, it all fit well, the instuctions/tuning guide was very good and it worked well. I avoided their carbs in the past but would consider one in the future. The only draw back with the Mukuni carbs is changing altatude and having to pop the top and reposition the needle on the side of the road. (loose that little clip and your Fu**ed! On our way back from Sturgis a couple years ago we went to Yellowstone. The road to the East entrance is 10,000 feet in elev. On my 74 with the bendix, as we went up and the carb went rich, I just reached down and turned the main in a little as needed. On my wifes 65/ 650 Tri w/dual Mukunies, we had to stop twice and pop the tops to lower the needles. Then on the way back down to sea level we had to do it again twice. Other than that, those carbs have been great on the Tri..