RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
What I'm using on my rs4 is an os18Tz Drops right in but you will need a rear header and possibly engine mounts.
Electric is kicking butt. I disliked it till I bought a LiPo battery for my sons Sprint 2 flux and it is a beast. The nice part about electric all you do is plug your battery and switch car and remote on and GO!!!
Now with nitro. It kind of sucks having to carry glow plug igniter, fuel, starter box, remote and lets not forget batteries. Tune your engine and adjust your shifting from 1st to 2nd. But I still love my nitro listening the engine rev and the gears shift. Electric cant do that.