Jim,
If it's any help the only ad I can come across for Greer and the Challenger team is for one car only, descriibed as 'ex Rouff' in Autosport 8 Jan 1976. I understood the car went to Walter Hoffmann. Do you know when Weber is meant to have got it? By 1975 there are at least 8 GRD 373s I can't account for.
Chris
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