I have both versions. The old 80" with the one piece wing and the new one with the two piece wing. I assume you have the one with the two piece wing. Mine came with an Evolution 46 because it was the Plug and Play version and the engine was installed so that the cylinder head was pointing down at a 45 degree angle. When I installed the Saito 72 to replace the Evolution I left the motor mount in the same location. Yes there is a large amount of the cowl that had to be cut away and probably more so on mine because it was already cut for another engine. I think it looks o.k. but that's just me. If I can find a pic on my mac I'll post it for you. The engine on my old Cub is mounted at a 90 degree angle .