RE: GP Waco?
Mine fit just like Cannonball's only I didn't drill holes to be able to remove the gear. You should talk to GP in the AM to find out what they can do. Measure your fairing at the bottom opening. Mine is 138mm or approx 5 3/8" yours should be close to that. If the fairing opening is not too long then the the legs are to small.
Good luck,
jimm