I bought it as a roller a few months ago. Didn't have any nitro or electric parts.
Parts used.
Grid RC motor mount (f'ing awesome)
CC 1800kv 1Y motor (gotta love clearance)
CC MMM (i've got a few of them)
JR Z9000s servo (came with the roller)
DSM RX (a 3500 I think)
DX3R TX
Imex J-Hawg tires on 1/2 offset rims
Team Losi Battery Tray (the RC8E version is way to small)
Gearing is 15/44 (I want to be able to gear up for speed without using a large pinion). Been running on 4S. Freshly charged packs are almost hitting 50mph. Definitely moves good. I've got 50k in the center diff for some controllable wheelie fun.