Here is another one that wont break the bank, it does all your gauges, you only need one.
http://www.ebay.com/itm/271008367259?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1586.l2649
Hi,
Just so you guys know you can buy solid state regulators on ebay with year warranty and for a lot less than a repo.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=280572904377&viewitem=&sspagename=STRK%3AMESELX%3AIT