Hi James, when the York style, (Borg-Warner) compressor was very common in the marketplace, it was the best and most durable out there. Also really easy to rebuild. When Diesel-Kiki bought the design rights, the quality went to shit on short order. Nowadays the Sanden, (american made, not chinese variant) is by far just as durable and much more efficient. One does not however just want to go out and purchase a compressor that fits a certain set of mounts to a certain engine etc. There is much more criteria to be solved for prior to the purchase. One needs to know the evaporator capacity in tons of refrigeration capacity per hour, followed the condensor heat rejection characteristics, followed by a proper expansion device to allow adequate "flash" of the liquid refrigerant from a liquid to a gas, and near lastly, proper hose sizes to connect it all together. Mismatch any part and less than adequate cooling is the result. I've seen many glider kits assembled utilizing a known good compressor already mounted to an engine and the package not come together properly. If Lazr is simply replacing a known good working unit that leaks and can obtain a like compressor there will be no problems. However without a factory tag affixed to the body, and unless able to trace the numbers for a like kind unit, trouble could be on the horizon. Rob