I have for sale a pair of GMC 305 Big Block V6 Heads. These are part number 2436645. Both heads are date coded 1/9/8. These have been freshened up and have been cleaned, checked for cracks, valve job, resurfaced assembled and new freeze plugs. Please look at all the pictures. These are being sold AS IS. Please email with any questions and please check out my other listings. Please email with zip code for a shipping quote. I can add a shipping quote to listings before you purchase if you send me a zip code.