Wildcat, since 1/8 scale platforms are legal I'd build an rc8.2e with sc8 shock towers and bumpers with narrower hexes to fit the width limit and you'll be golden. that combo works. some guys have converted there mugens over too. This I see is the trend for outdoor 4x4 sct.
that's the way it should have came from the get go since most of us run outdoor and run on big or bigger jumps.