Manhart got the BMW M4 CSL and converted it into the MH4 GTR II. Powertrain tweaks pushed the twin-turbo 3.0-liter inline-six to an impressive 702 […]
Manhart got the BMW M4 CSL and converted it into the MH4 GTR II. Powertrain tweaks pushed the twin-turbo 3.0-liter inline-six to an impressive 702 […]