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Wow Yenko Nova story and welcome aboard!
The Youngstown dealer would likely be Marve Minneman, did your father buy it new or used?
What year did he sell it also what was your phone # then as it may help finding any old ads?
There's a bunch of Nova ads in these two threads you can cruise including the two below that likely aren't it but worth going through also the registry here may offer clues too.
https://www.yenko.net/forum/showthre...=148069&page=5
https://www.yenko.net/forum/showthre...=135780&page=4
A lot of years have gone by but best of luck backtracking and hope you find it!
~ Pete
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