[nitrostarter]

I'm not certain, but I think you can use their long shank pinions to eliminate the clutch system.

But unless you lock up the tranny in 2nd gear, you'll have no brakes that way if you do away with the mechanical brakes.

My revo was a converted 2.5. I used the RC-M motor mount. I also removed first gear and JB welded the 2nd gear to the output shaft to eliminate the clutch effect and lock the tranny in second gear. This allowed me to ditch the mechanical brakes as well. This setup worked great for me and held up to both mmm 2650 and mmm 2200 combos.