Sounds like that may well be the way to go then, what sort of length is a 1512? I'm kind of limited in this application. Too long and it starts cutting into the lipo room, having said that the Turnigy Lipo is apparently only 35ish mm high so any motor should be able to fit over the top of it as the lipo bay is 36mm deep.

Yeah, it's kind of wierd. I just sat the Revo next to the RB3 and the wheelbase is pretty much the same, the width hex to hex is similar, the bumpers are about an inch off, but the Revo looks huge compared to it. I guess it's because the Revo is so cluttered and a bit of a messy ungainly design. The RB3 is perfect to me, cut right back to the basic requirements... One of the reasons I always refused to buy a factory conversion (E-revo, Savage Flux etc.) was because I knew that a porky nitro with a few changes and an electric motor lobbed in there wasn't really doing the sheer power and advanced technology of electric the justice it deserves. There is no way an E-revo should weigh over 5 kilos even with packs.

I got annoyed with the lazyness of manufacturers not giving these fantastic power systems the platform they deserve in a bespoke, ground up designed electric truck. It's kind of like finding the worlds greatest race horse, then finding the worlds fattest jockey to ride it. I looked around a bit and found the RB3, looked it over and watched the development videos of it pulling a standing backflip with a mamba max, 3s lipo and a medusa 50mm can motor, half the brushless system in a Flux, and was hooked. Just ca $900 later i had the rolling chassis with all the bits I wanted lol. Never said it was gonna be cheap.