You are looking at a very special BMW or as Matt Farah would put it “possibly the best BMW you could build at any price.” This BMW 135i was slowly upgraded to a M-series both in looks and performance. The final touch was replacing the N54 inline-six with a S65 V8 from a BMW E92 M3. All modifications were completed by Performance Technic in Dublin, California.
Update 11/12/2015 – Added video of Matt Powers driving the car at Autoclub speedway
Source: Drive and Performance Technic FB page