SBC double hump heads

I am cleaning up shop and these have to go. They came off my running engine last year in favor of new Dart heads.
461 and 186 straight plug, they take gasketed 13/16 plugs, new guides, hardened sets, screw in studs, raised guideplates, 1.94/160, 64cc chambers, umbrella exhaust, spring intake, z/28 brown springs. stainless valves.
The 186 head has accessory bolt holes the 461 does not.