I have a pair of LS1 heads that came off an '03 SSR, I believe. They have around 80 mi. on them. They are complete and in good condition. The casting numbers are 3324L5573924 and 3324L5583924. I will sell them for $910 O.B.O. They retail for about $1400 shipped from gmpartsdirect.com You can hit me up at onefasttibby16 on AIM if you have question or if you know of anyone that would like a set of these, or you can email me at fear_this_z28@yahoo.com