Forget one of one: this particular BMW 3.0 CSL is, quite literally, the very first M race car, and it’s up for sale for presumably many dollars. The very first official BMW M project was the 3.0 CSL.

For sale: 1974 BMW 3.0 CSi race-car project. Rebuilt 3-liter with Schrick cam, headers, triple Webers (not installed), full coilover suspension (not installed), big brake kit (not installed), Sparco ...

Think "BMW touring car" and likely one of two vehicles come to mind—the 3.0 CSL or the E30 M3. Both dominated touring-car racing in their respective eras, and helped cement BMW's reputation as a ...