Yup, already got the APE studs. That and the Ti Retainers, and the Kibblewhite HD springs. Also a Webcam 63a....
The cleaned up combustion chambers were on the 160 head, however, I just took my trusty steam cleaner and a stiff nylon brush to the 27 head and it came out looking pretty good. This head is going to MRieck anyway, maybe I should ask him about the extra bolt...