looking for bio on Don Grotheer

Thanks again for the information and pictures. I have info now on the following cars that Don campaigned:
1963 Belvedere Max Wedge - Stock
1966 Bevedere 2dr post street hemi/ 4 speed - Stock
1968 Hemi Cuda - Super Stock
1969 1/2 Road Runner Clinic Car
1971 Cuda - Pro Stock
1971 b-body - B Modified Production

The two cars that I haven't found info on yet is a Duster in a grainy photo posted below - I can't even tell what year

& a Plymouth Arrow that seems to be running Pro Stock (1977?)

Anybody know anything about these?

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