This information comes second hand through Geoff Newcombe, a SWPC member.  A contact of his
desired to have original instruments for an antique aircraft, Swift I beleive, restored and 
calibrated/repaired.  He found this place through the internet that restores antique auto 
gauges so he phoned them and sent them the gauges . They got back to him saying no problem, 
they're all Delco-Remy built for Pioneer. When he got them back he was impressed. 
Their address is:::: 

D&M Restoration, Inc.  
46 Grand Ave. 
Greenville, South Carolina 29607

e-mail  dandmrestoration .com.

800-722-0854 or 864-421-9959.