Can anyone tell me where to get a twister intake for this? How to make one?

It's a 21cc Featherlite case. I dropped a 25cc cylinder and piston on it. Works good, but the carb needs to rotate. First tank yesterday it was turning a Master Airscrew Classic 14x6 at 8000RPM with stock muffler. Also turned a Zinger 13-8 at 7500RPM. I gutted the muffler and brazed it back together today. Should run even better now. I may try a 15-6 after a few more tanks.

I have no way to run it on the plane unless I rig some sorta bellcrank or find somebody to make a twister intake for it. [&o]

Thanks