I went back and looked at my wings again, and then checked the manual again, figuring maybe I missed something. Nope, mine would only go in one way; and with the horn epoxied into the wing, it would only go in one way.
BTW; I removed the stock motor mount and put on the Hangar 9 metal motor mounts so I could move the engine to fit. Had to redrill the firewall, but it was okay. I also removed the fuel tank pod and will mount the tank in the conventional way. I can stuff the ignition module down the left side. After moving the engine back, everything will clear the cowl (except the needle). I would recommend the Bisson muffler instead of the big and bulky Evo muffler. It will give a little more room for the hot air to escape. I also opened up the fake vents on both sides, for air-flow.
Has anyone actually flown this Cub with a gas engine???? If all this fails, I will go glow.