MattRwebB Posted July 20, 2016 Share Posted July 20, 2016 If I want to buy a car back exhaust can I buy any ? Or will it have to be HR specific ? Not sure if the bore size is different on HR or if it's just the cats that's different I'm keeping original cats Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
KyleR Posted July 20, 2016 Share Posted July 20, 2016 They'll all fit. The cats are different, but they're different at the manifold side, not the Y pipe side. Quote Link to comment Share on other sites More sharing options...
MattRwebB Posted July 22, 2016 Author Share Posted July 22, 2016 Thanks When I'm looking most systems say up to 06 models ... what is the HR bore size and DE bore size ? Quote Link to comment Share on other sites More sharing options...
KyleR Posted July 22, 2016 Share Posted July 22, 2016 Thanks When I'm looking most systems say up to 06 models ... what is the HR bore size and DE bore size ? I honestly wouldn't pay too much attention to what a lot of websites say. Imagine the amount of cars they supply parts for x the number of different engine variants and you really can't expect them to get it right all the time. Quote Link to comment Share on other sites More sharing options...
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