Your snowblower, quick hitch, and subframe ( and probably the PTO setup) will all fit a
B2630. The snowblower will work on the
B7800,
B2710, and
B2910, etc., but the sub frame /quick attach for those tractors is different. Bialecki has some pictures of his
B7800 posted, and you can see the difference. Hmm, think I have a picture of his tucked away.. Yes. You can see that his subframe bolts to the tractor frame, and has a completely different shape than yours, which hooks over the front of the frame, and pivots up to connect to the tractor frame.