If you're looking for new, never fitted parts then I doubt you'll be able to find them already painted. If you want already painted parts you might have better luck looking in salvage yards or on ebay.
As far as body kits are concerned, luckily there are several manufacturers to choose from. Enjoy browsing.
www.stillen.com
www.wingswest.com
www.erebunicorp.com
www.veilsideusa.com

www.boostsolutions.com
www.nopionline.com
www.splparts.com
www.z1motorsports.com
www.ultimateZ.com
www.conceptZ.com
www.sgpracing.com
www.avalonracing.net
www.strictlyz.com
www.gmsracing.com
www.overbooststore.com

 

Yeah, and if you've read enough posts on this and other forums, you'll quickly realize that it'll be wise of you not to pick a body kit, wing, exhaust, vinyl stickers, or spoiler that's too pretentious or ostentatious! For some reason, lots of people in this world seem to hate tricked out or "riced" out cars, and you wouldn't want to get on their bad side...

 

If you're going to go with a wing, I suggest a TT wing. IMO, the best looking wing on a Z, especially 94+ TT wings. Whatever you do...please don't get the veilside wing. Congrats on the new Z, if you take care of it, it's gonna more than take care of you.

 

I like the original 90-93 tt wing. It sits flush on the tail and compliments the lines of the Z well.

 

I thought vinyl stickers made the car faster. As well as tail light conversions, and tint. Please tell me im right.

 

Abso-Frickin-lutely!!!
All I have to do now is get that tail light conversion done!!

 

If you like the Wings West kit there is a guy on e-bay that sells the whole kit for $745 shipped and it's urethane. I bought the front end from this guy & he's totally legit. His ebay name is lsutigersteve. He had it set up so I picked it up from Wings West. Excellent seller & excellent product. If you or anyone else is interested let him know Dustin sent you.

 

Oh don't get me started on eBay! That freakin' site mysterious changed my password and now I can't sign on to my account! And when I clicked on where it said "forgot my password," it tells me my password has been sent to an email account that isn't mine!~ Sigh...just my friggin' luck I suppose Now I have to keep checking everyday eBay-loathing day checking to see if someone else is using my account or my information...

 

Can't you report that? Even if it takes a call directly to the helpline.