picked up a GT4 lip that I'd like to get installed this winter, but wasn't sure if there was a consensus vendor for backing plates and the ducting itself. what have people been using? i found these guys, but i assume there's something stateside too:
https://www.mk-motorsportteile.de/en...-plates-1m-gt4
__________________
Current '21 DG X5MC, '22 X5M50i, '11 E90 M3
Recent Past '12 E92 M3 ZCP, '08 E93 M3, '18 F80 ZCP, '04 E46 M3
I think I have an M3 problem.