i have these pressure tested and dipped at boyettes machine shop in raleigh nc last year. they need everything gone thru like valve seats guides ect. ill take trade fire arm related like a rifle or shotgun ammo ww2 stuff, work done on my car, construction help like building a fence. basically what do you have 200$ obo plus shipping pick up free i can bring to raleigh or if I visit any state like Virgina south calolina or tennesse I can bring them http://s161.photobucket.com/albums/t237/garyd75/1970 buick 455 heads/