Some embodiments include a club head with sole mass element. The piezoelectric unit has one or more piezoelectric material layers and electrodes associated with same. Service-specific components and reusable components have a standard configuration interface. The disclosed embodiment may be used in an after-market product as it requires minimal interfacing with other vehicle electronics. In one application the method and system are utilized in the selection of healthcare products, services and providers based on pangenetic and non-pangenetic information associated with the consumer. Particularly useful molecules of the present invention comprise peptides corresponding to soluble forms of the death signalling portion of p75NTR.