A-ha! I think I found one (link below), but I may have to act fast. The brochure I have on it says there's 21" fore & aft clearance & 27" from backbone to share. Plenty of room for 10" plowing. Sounds like just what I'm looking for. The one in the link below seems to have been dropped on it's tail wheel & I don't think a new lift rod is going to be easy to find.