these are the new style rocker arms part number 6645. there is so much demand for these bad boys that they are on back order.... unfortunately, i ordered 2 sets by accident and since i let them sit in my garage (came in one box so i didn't realize i ordered 2) i cannot return them because the store's policy. i payed a tad over 400 so i'll just set my price at 400obo... looking for a local sale
look at what people are saying about them:
http://www.ls1tech.com/forums/showthread.php?t=669911