Hy Brian46 Chevy, okay more research has yielded a few more part numbers, the Euclid p/n E-4430B10 interchanges with Dayton 300-108, Moog 8490T+10, FM/TRW K391C+10, you should be able to get someone to track down one of those part numbers if you haven't already made a deal with Rare Parts, hope that helps.
