I've got a question on 'Busa calipers. I was disassembling a caliper I picked up at a swap meet. I thought it was a 'Busa caliper but it wasn't. My 'Busa caliper which I've retrofitted onto my two Harleys all have 4 1.060" pistons and two .940" pistons. This caliper I picked at the swap meet had all six piston sized 1.060" and it had no pad shims [Suz. PN59171-33E00]. I was wondering what bike these came off of in case I ever wanted to use them on another project. The external dimension on this caliper were all very close to a 'Busa's dimensions except for some very minor differences. It would have bolted up with no problems. As it turned out I had another pair of genuine 'Busa calipers so my 'Busa seal replacement sets weren't useless to me. Any help here would be appreciated.