I sold a couple sets of 670 heads I had got around $250-300 for those, I kept some #16-#62-#061 and a couple of #13's but if you look through CL some of those nuts are trying to get $800 and up for them, I cant believe any informed pontiac enthusiast would pay that, Ive even seen 6x's priced at $300 or more, I sold butler 6 sets of those at $60 a set