Are all the parts interchangeable between the TDI cup edition and the original MKV TDI? If so I would rather just replace parts on my 09 TDI with the upgraded ones from the cup edition.... I like the body kit and the front end styling, also would like the upgraded adjustable suspension and brakes. Not a big fan of the decal on the side or the rear spoiler and does the cup edition only come with cloth seats?