Got these off ebay yesterday. Pretty good deal for under $20.00 a pair. These are the smaller ones for the GMC. The guy had other auctions for 7" Chevy lights. They come with a lifetime guarantee( for whatever that's worth). Even if the bulbs don't last long, there are alot of companies that make high quality bulbs that will fit these.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2454497767