What is best to go from the TRX 3.3 or to the O.S 18TM in a completely stock revo

I have a TRX 3.3 and an EB MODS OS 18TZ and for over all drive ablility I would recoment the TRX 3.3 it has loads off power and the power band is smooth all the way through. You can actually drive and do wheelies if you want.

OS 18TZ is the way to go. they will last forever and will give you great power. I have heard of some people getting the tranny ripped out with a 3.3, so i would go with the os18tz.

I have destroyed rear diff cups with both engines, and sheared a pin in the tranny with the 3.3, so it is pretty even. I only run my trucks on the track so I don't know what back yard bashing would do to the drive train.