I have seen a lot of different information on blades for the B7100. I recently purchased a 1981ish HST 4wd B7100 with a front blade and it has the KUFD210 front blade/plow. I am still looking for a manual on this blade since it needs a little work, but I just wanted to let people know that this blade does appear to work well on B7100's. The blade and subframe seem to be nearly indestructible. The subframe is there and fits very well, it looks stock to me and so does the blade, but I haven't been able to confirm that it is. Also if anyone knows where a good place to get a manual for this blade is please let me know, I have been watching ebay, but no luck yet.