340 X heads ?

500 is kinda high for a set of X heads that need to be redone....I have a set of X heads for sale that are machine shop fresh, maganafluxed, with all new guides, and harden'd seats, stock springs, no porting, for 700.00. Ican say you would likely have 350.00 to 400.00 in haveing them redone at a machine shop.