I'm very interested in the 3pm-x you have for sale, but it won't let me pm you.
I'd like a couple pictures if possible, my e-mail is [email protected]

yes. only the gears are different.

i believe the kyosho mp9 spur will fit, not 100% sure, i think you may be thinking of my replies on the 801xt thread, where the kyosho st-rr spur fits, on the truggy the entire diff from kyosho will fit, i even used st-rr evo diffs front and rear, i would search in depth as you can on the buggy though, i dont want to steer you wrong and buy unusable parts..