Keith, the mounting brackets are different for the various windbreaker cabs. There are several variations, one for the 70/100, one for the 71, 72, 1x2/3 and 1x4/5, one for the 73, 1x6/7, one for the 86, 1x8/9, one for the Quiet Line series, one for the 82 series and so on. Having said that, a windbreaker for a 86, 1x8/9 series could be made to fit a 73, 1x6/7 series with not too much modification, it'll take a little more modification to make it fit a 72, 1x4/5 series due to the difference in the fender mounts. You thinking of buying that nice NOS Wide Frame Windbreaker from CC Specialties?