I recommend Gamblin Motors in Enumclaw. I know it's a bit of a drive for you, but I live in Olympia and it's an hour drive for me to get there, but it's worth it. I even have a dealership about 1/4 mile from my house, but I'm willing to drive there for their service. I haven't been there in awhile though and I think their management has changed so I'm not 100% if you'll still get great service.
I took my car there because I had the transmission shift flare issue and when I took my car there, they told me they couldn't replicate the problem, but figured since I was willing to drive an hour to have them look at it that I wasn't lying so they fixed it anyway and gave me a free loaner car for 3 days while they were working on it. I know one guy named Brian who just moved to NC had taken his car in there because he needed his lower control arms replaced and they replaced his under warranty and his G8 was supercharged and lowered with Shocks/Struts/Springs.
Just a thought even it's a long drive. I think some people have said good things about Clyde Revord Motors and they might be closer to you.
BTW welcome to the club.
2009 Pontiac G8 GT Liquid Red Premium/Sport, 20" MRR GT1 Staggered wheels, Superchips Cortex, Vararam OTR, Solo Axle-back w/ 3.5" tips, x-pipe, 20% tint all around, 6000K DDM HIDs, LED fogs, TS|S Fender Badges, GXP Diffuser, Spare tire kit, Maverick Man CF Spoiler, Blacked Out Front Grills, Belkin Bluetooth Audio