Aerotich--I 've seen a few 4* of various sizes that have been modified to resemble different aircraft. That's the great thing about this hobby--experimentation and adaptation. Some guys have made cowls. I have left my engines upright, just for ease of operation and have always gone with 4 strokes (except the brief time I had a Super Tiger .61 with a pipe on my 60 sized 4*. My OS 91FS was on another plane and I just had to fly the 4*). I had skis on my 40 sized for a while--it was a blast in snow.

There are probably threads on bashed 4* if you look in Sport, Beginner or Kit Building forums.

Greg