This 1989 BMW M3 is for sale on Bring a Trailer in Fullerton, California with a current bid $52,500. The factory 2.3 L S14 inline-four has been replaced with a 3.2 L S50 inline-six from a E36 M3. The drivetrain features an E36 M3 six-speed manual transmission with a UUC Motorwerks clutch assembly and lightweight flywheel, and a LSD with 3.73 gears. The car rides on a Bilstein shocks and H&R lowering springs, Ireland Engineering sway bars, Brembo cross-drilled brakes, and a set of Forgestar 17-inch wheels. The interior features Recaro seats, Takata harnesses, tinted windows, Alcantara headliner, roll bar, and custom speaker box in place of rear seats.
Source: Bring a Trailer and Vincent Wong