Factory-built race cars didn’t only come from Porsche, Ferrari and Shelby. Oldsmobile played in that space, too.
And it offered one with rather humble roots.
The year was 1992, with the now-shuttered brand conjuring up something special for the day’s professional street stock endurance racers–think IMSA’s Firehawk series, the predecessor to today’s IMSA Michelin Pilot Challenge.
The starting point for …
