Welcome and congrats on the early Xmas present to yourself!!
There are very few cosmetic mods out there for the G37 sedan at the moment. But they'll be along shirtly I'm sure..
Here's the Eibachs I just found on Ebay
http://cgi.ebay.com/ebaymotors...38515
Here's a list of some currently available mods..
Intakes: Stillen G2/G3, R2C, Injen, Takeda, plus a few others. K&N and HKS make drop-in filtersExhaust: Stillen, Invidia, Fast IntentionsCats: Stillen, Berk, AAM, Fast IntentionsTest pipes: Berk, GTM, Headers: StillenCoilovers: Tein, JIC, HKS, and a few othersSprings: Eibach, H&R, TanabeSway bars: Hotchkis and StillenFront Comber arms: SPCRear camber arm/toe kit: SPC, Eibach, and IchibaTune: Cobb AccessPort, Techosqaure, and soon UpRevTwin Turbo: GTM, AAM, or HKSBig Brake Kits: Rotora, Stoptech, Brembo, and the factory Akebono for non-sport modelsRotors: Stoptech and RotoraLines: StoptechPads: Project Mu (2x), Ferado, and Hawk (3x)Front lips: Kenstyle and Kenstyle knock-off by RavSpec, factory sport lip, and factory non-sport lip (this will work on the sport model also).Rear: RavSpec rear spats, and rear diffuser (coming soon)Engine Covers: Status Elite, and EbayGrills: Factory Midnight Grill, custom factory grill (modified), or IconicSpoilers: Factory, TK knock-off by Mach III, Grubbs "Euro" spoiler, StillenRoof Spoiler: Stillen, RavSpec