power inc went out of business a long time ago and I would imagine they are getting pretty hard to find now, they also made a suitcase style silencer for the pipes. They don't have shielding on the pipes like the factory ones do, and if they get snowdust and etc. on them will drop rpm-max power very easily. They also only made barely any more hp then stock. The biggest benefit with them was the weight shavings but again, the weight vs the consistant performance, I would use the stock pipes if it were my sled but that's just my opinion. good luck .