Hi Matt, Thanks to you and everyone who responded to my plea. No I havn't resolved the problem. When I contacted the shop to ask what brand unit they were looking for for our car, I got a big run around from one of the mechanics ( the owner is out of town for a vacation for a few weeks) telling me the notes in our file don't say, but i could just call the dealer and they would tell me. ( obviously doesn't know that Imperials are completely foreign to Chrysler dealers, EVERY year EVER made) but for grunts and giggles I called..parts guy tells me his book doesnt go back that far, but the old book he can find says it could be either of 2, a bosch or bendix . This , of course, we already knew. anyway he says look at the unit, should have a tag telling the brand...it doesn't. So, I'm still at square one, havn't had a chance to study the service manual to attempt identification of the unit, but hope to this weekend...then my hope is to find some one to rebuild it or get a new one. Matt __________________________________ Do you Yahoo!? Free Pop-Up Blocker - Get it now http://companion.yahoo.com/