RE: J3 Cub RTC
Nope. Too bad there aren't lots of ARC's out there. At least then you could have a pre-built that didn't look like everybody else's.
Do what I've done several times, buy whatever "scale" ARF you desire, rip off the factory cover before you even assemble it. Then you can reinforce the usual weak areas, and then make it look however you want.
What will you do regarding the L-4's greenhouse? The only L-4's tha don't have it are still yellow, or you could make it an NE-1, the Navy version, blue camo.