I'm looking at buying a B2410 and had a question about rear blades. The Kubota brochure lists a 4' or 5' rear blade for the B2410, with the note "requires main frame kit". I had planned on buying a Woods or Monroe Tufline rear blade instead of Kubota, but the note has gotten me wondering what the deal is. Does this kit have some type of hardware that ties the blade to the tractor frame, and is this commonly required on most compact tractors?