At our repair facility J W Tractor Repair, LLC located in Goshen CT we use products from JW Diesel Engine Parts. Here is a 5.9 Cummins long block being set up for installation on a Tree Farmer C7 Log Skidder. The original engine had a rotary style injection pump so we had to swap over gear housings. One of our previous jobs was installing an identical engine in a Timberjack 460 log skidder and it has been in service for more than 6 months with great results. Using new long blocks in these cases were a much cheaper option for our customers than rebuilding the existing engine.