A big block revo is pretty fun. If it doesn't have it, might want to get the M2C engine bay plate to add some rigidity to it. I have that on my big block revo. Helps with keeping mesh when jumping a lot.
I also have RRP steel gears in the trans for the input/two speed. Oddly, my bb revo was a slayer when it started, so it has weird final output gears that I left in it when I put in the RRP gears. It's taller gearing to compensate for the smaller tires, so the 14/40 gearing I have on it seems really low... but it's not, especially with the 3.8 trencher MT's I have on it. My 21Tm revo has all RRP steel in it with the RRP revo final gears. It has 16/38 gearing I think, with old arrma kraton tires on it.