There are several ... Electromotive in Manassas, VA comes to mind. Try their website at:
http://www.electromotive-inc.com/home.htm
There was some discussion of management systems in a previous thread:
http://www.pelicanparts.com/ultimate/Forum3/HTML/001895.html
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Warren Hall
1973 911S Targa
[This message has been edited by Early_S_Man (edited 08-06-2000).]