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If you haven't seen them already, check these links below.
1'st & 2'nd links are to pages w/ one of the original owners of Reilly Chev John Tabacchi including his 100'th B'day celebration in 2017, note John was a WW2 vet who met the Pope!
As the 3'rd link, your salesman Joe Staffilino bought the old Westlake Bros/Pete Lash Chevrolet dealership in 1981.
Staffilino Chevrolet is still in operation today also Joe still alive as of 2015 so may be worth trying to contact him?
4'th & 5'th links are for a Reilly Chev advertising jingle record on eBay also Facebook.
Last is a 2012 SYC thread link when member camaromb was advertising his Reilly delivered LS6.
Best of luck!

~ Pete
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http://www.harrisonnewsherald.com/?p=15353
http://wtov9.com/features/shining-st...hn-tabacchi-sr
http://www.staffilino.com/About-Staf...www.google.ca/
https://www.ebay.com/p/NOS-Chevrolet...p2047675.l2644
https://www.facebook.com/adamsantiqu...4050623449791/
https://www.yenko.net/forum/showthread.php?t=119264
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