[tcollier91]

Trying to purchase the M performance exhaust from my local dealer. They are saying there are two different parts with different part numbers. They can't tell any different between the parts, but one is 1.4k the other is 1.1k. The part numbers are 18-30-2-406-953 and 18-30-2-424-608. Does anyone have any suggestions as to which I should go with. Was there a revision or something? Thanks for your help.