Hi all. I am trying to find the frame tubing size for the IH or CaseIH vibra chisel. There may be a few model numbers, but I think one of them is the model 645. Basically it is a king sized version of the vibra shank, which is a model 45, and uses a 2.5"x 2.5" square tubing. The vibra chisel, from the few pics I can find, uses a rectangle tubing, but I cant find what size.

 Might someone here know and please share the info?

 Thanks.