LS4 Performance - heads

Anybody know what a set of stock heads without valve train costs from GM? I'm looking to get a set of heads ported and polished and such. Would rather take a set and have them done up instead of taking mine off and have down time.

Part number: 12564824

http://www.gmpartsdirect.com/results.cfm?perfPackages=1&pkgid=55

This is the GM Parts Direct webpage that has the gen III and IV heads.

I think the one you are looking for is on this page, second from the top.

Hope this helps.

Kevin

Here's a bare one:

http://www.superchevyperformance.com/LS6_Production_Cylinder_Head_Bare_p/12564825.htm

http://www.exoticperformanceplus.com/performance_parts/index.html?item=1123