I have a Mk 5 Golf GT.

1) I need to get a new exhaust soon but like the look of the twin exhaust like on gti's. Is it possible to buy the rear bumper part and change it over? Is it a straight swap?

2) The throttle response isn't great, are there any good solutions to increasing the throttle response other than a remap?

3) Anyone use the Heko wind deflectors? Are they any good?

4) Will 18's fit without modification on this car?

Thanks