I would imagine they would thoroughly clean and inspect both the valves and springs in the process of a head rebuild, leaving little chance they would still stick. I'll probably have them replaced anyway depending on what kind of port size is available and what kind of cam I get but I was mostly looking for pricing for now. If I can get a set for around $200, then thats not too shabby. What kind of availability do you guys think there will be on an item like this?