The winch is the H12 with the type R motor, i used 12mm wall CDS machined down to 6mm at the ends to allow it to slide inside the original tube upto the end plates. I drilled the original tube at 8 points each end, puddle welded through and two main welds in the middle. The shafts we made from scratch. I had alot of trouble drilling the original tube, not sure what grade it is but its very tough.