Manhart Makes The E31 BMW 8-Series Great Again With E39 M5 V8 Manual Swap The gorgeous classic trades the V12 for a more powerful V8 in combination with chassis upgrades and 20-inch wheels ...

A rebuilt 4.9-liter S62 V8 engine, complete with its six-speed manual gearbox, was installed, along with an ESS supercharger, bigger brakes and a limited-slip differential from an E39 M5.