Volvo D12 down pipe $370 replaced for $80

So my down pipe broke and Volvo wanted $370 for a new one. I picked up a down pipe for a kenworth from Napa that bolted right up and connected to the factory Volvo exhaust and turbo. Part number is U5917915a to make it fit had to remove the oem exhaust mounts under the truck and add some spacer to bring them out a little further. Napa part cost $80.