New Member...advice on sites to get parts

Hey all,
Recently aquired an 82 kz650 csr from a family member. Bike has been sitting outside for 5 years untouched, not covered. Its a total rebuild and am almost done. I am looking to get a new chain since all the O-rings on mine are long gone. Any advice on getting a new chain? Does it really have to be an O-ring style chain? Any help would be great, thanks.
I will start posting some pics of the bike shortly.

(z1enterprises.com)(americanclassix.com)(bikebandit.com)(fastfromthepast.com) are all good sites from what I've heard. Any sites that show up on the vender directory here.

If you're going to replace the chain, do both sprockets too as old parts quickly wear out new ones. www.z1enterprises.com sells good chains and sprockets. www.gearingcommander.com is website for figuring out new ratio's

Used bike parts can be bought at www.oldkawman.com
New parts at:
www.johnnysvintagemotorcycle.com
www.reproductiondecals.com
www.redlinecycle.com
www.americanclassix.com
www.sudco.com

MFolks +1 Do sprockets and chain at the same time or you will have premature wear on the chain. I would get an "O" ring chain if you plan to keep and use the bike for any reasonable length of time. Cheap chains are just that - cheap, and they wear accordingly. Ed

Thnx all, will look into it.

I'd be very careful with Johhny's, his prices are ridiculous unless you can't find it anywhere else,I wouldn't be buying much there, Example a brake pedal for a KZ650 $105.00. Hell I just bought a whole bike, KZ650SR for $600.00.He thinks NOS means worth it's weight in gold,how mistaken he is.