i have a bare frame from a 300ex i picked up and a cr 500 my plans are to make a honda quadzilla and i was wondering if anyone knows the size differance in 250r and 300ex swingarm and a-arm mounts. so if you have a 250r i was wondering if some one could tell me the distance between inner and outer edges of the mounts on the upper and lower arms. i have a 250r 3 wheeler and believe the swingarm to be the same so i can referance off that for the rear any help would be appreciated thanks