"You cannot buy them unassembled. If you want to build anything really healthy you are going to have to buy new springs , retainers and locks. I did not want to waste money on parts I would never use.....That is why I did not buy them. "

maybe not
but if you were building something REALLY healthy would you consider a basic head that is set up for a mild hyd cammed application anyway or move up to a differnt head altogether

i thought of the stealth/performer heads but went with the victors since i used my own springs.