An S38 inline-six engine from a BMW M5 E34 replaces the original engine ... Robert Downey Jr.'s custom BMW 3.0 CS is a bold statement. It's a car that pushes the boundaries of classic car restoration.

How far it had come from when it was new, when CAR magazine pitched a BMW E34 M5 against a Ferarri Testarossa in 1990. Then, it was moved to write: ‘The BMW is more practical, more comfortable, ...