If you’re going to go that route, a 2022 BMW M4 Competition xDrive seems like a good choice of base car. Somebody actually went and did this, and now you can benefit from their investment by buying the completed M4 pickup on Bring a Trailer. An eight-speed automatic transmission was mandatory with the Competition xDrive in this debut model year, along with a limited-slip rear diff. Bring a Trailer Bring a Trailer Bring a Trailer Bring a TrailerRemarkably, the listing claims that the pickup conversion also doesn’t interfere with the factory Park Distance Control parking sensors, surround-view camera system, or adaptive cruise control. The automaker has a history of pickup conversions going back to the 1960s, and even made an E92 M3 pickup back when that generation of M3 was new.