Go to
www.precisionporsche.com and you'll find the kits there. Keep in mind that the bumpers are fiberglass and it may get damage easily, but you can't beat it for the price.
Still can't decide on which bumper still. I've eliminated the GT3. Cleaner lines on the Turbo bumper with the C4S lip, but agressive looking on the GT2.
More opinions? Score so far on the two that I want:
3- turbos
2- Gt2