Earlier this year we wrote about Polish drifter Bartosz Pelka’s BMW E30. Powering the two-door is a 5.4 L M73B54 V12 producing 501 hp and 480 lb-ft of torque thanks to a Vortech V4 supercharger. However he recently switched from a supercharger to a TX Performance T76RR turbocharger. The custom exhaust headers and turbo piping were fabricated by Lassie’s Garage (more photos).

Update 4/18/17: The engine made 702 hp and 972 Nm (716.81 lb-ft) to the wheels. New photos at the bottom of the article.

Update 4-18-17: New photos below

Source: Bartosz Pelka FB page and Lassie’s Garage FB page via ESD reader Piotr