thanks both. metalman, i was under the impression that the label was correct, because the C's simply had different kv ratings than the smooth cans? so you're saying the 540C 9L is the same as the 540 9L?

and I figured I'd most likely buy another lsp center diff, and use the kyosho 46 gear with 18-24t pinions.. w/ 3345kv, that'd be right around 50mph.

what else needs to be upgraded on the mt2? it's a non-18ss or 18ss+, just the standard nitro mt2.. front and rear diffs? how's the rest of the drivetrain/steering/suspension?