Fenders for partially recessed wheels?

Anybody know where I can find fenders that would work on a Grumman 2 type build? I would need fenders that are about half the width of regular fenders (about 4 to 5 inches), and work with 15" wheels.
I know I could probably get regular size and cut them in half, but with my luck that would probably turn out to be a disaster. (I don't need four 15" ashtrays. I don't even smoke?
Any suggestions would be appreciated.
I know I could probably get regular size and cut them in half, but with my luck that would probably turn out to be a disaster. (I don't need four 15" ashtrays. I don't even smoke?

Any suggestions would be appreciated.