Are you sure about that? I know that at times Oliver/Cletrac would sell street pads that fit over the grousers. Maybe this is the case, as it was the most common. I'd need to dig thru my piles of junk, but I can possibly find some cross referances, if you can't find something. As I recall, many parts interchange between the OC-12 and the BD or BG models. I do know the B models used a street plate #55638 that fit over the grouser, they also came with a pavement grouser part #55886 or 55888. There were rubber blocks part# 55855, my guess, since I've found no photo yet, is these were probably bolted to the grousers, they call for 9/16&quot; x 2-3/8&quot; bolts, which would be adaquate to do this. As we know, the OC-12 was an upgrade for the B models, and we do occasionally find parts machines. I have used channel iron to replace grousers, I have the flange cut off each side, then cut it to length, have it heat treated, then weld these to the tracks to replace worn parts. I would look and see if those pads are bolted to the grousers first. Don't be afraid to call if you do get in trouble, I'd rather try to talk you thru this than for you to get hurt, my cell is in the front of the magazine. Safety first!
Take care!!!
Andy