I feel your pain. Been trying to fit a new one on my SJ23. The Fultons are way too narrow, and the Garelicks are wide and pretty pricey. The big question though: What boat are you mounting the bracket onto? The mounting bracket, that part that attachs to your transom, is a big issue. Usually the dealers only list the motor mount size. The Garelick models 71090 and 71091 are terrific mounts and have a 8Wx10H footprint. Other models get even larger. Check your backing plate or board that is probably well hidden or virually inaccessable, except for Plastic Man. Check Garelick's website for some good mounting instructions. Thier customer service was great too, sending me detailed mounting templates for the 71090.
Good Luck and fair winds,
Lake Norman, NC