When did the changeover happen? I'd assumed it was at the same time as the Sterling was introduced. Was there a period when both were being used?
Alnico pickup and preamp from "1994" SR5
http://cgi.ebay.com/MUSIC-MAN-STING...7407272597QQcategoryZ4713QQrdZ1QQcmdZViewItem
Ceramic pickup and preamp from "1993" SR5
http://cgi.ebay.com/ERNIE-BALL-MUSI...7407530010QQcategoryZ4713QQrdZ1QQcmdZViewItem
Alnico pickup and preamp from "1994" SR5
http://cgi.ebay.com/MUSIC-MAN-STING...7407272597QQcategoryZ4713QQrdZ1QQcmdZViewItem
Ceramic pickup and preamp from "1993" SR5
http://cgi.ebay.com/ERNIE-BALL-MUSI...7407530010QQcategoryZ4713QQrdZ1QQcmdZViewItem