My friend's car is located near Montreal and competes in regional racing. Motor is from a 540i with 6 speed tranny. The whole package is 120 lbs heavier than an M20, but weight is moved to the back. So, we do not fear having a car with heavy nose and massive understeer. The motor and tranny are mounted solid. The shifter is now located 6 inches further back. Engine management is Electromotive TEC 2.

<img src="http://www.roadfly.org/bmw/gallery/photos/photos-01-2004/8-5389594.1">
<img src="http://www.roadfly.org/bmw/gallery/photos/photos-01-2004/8-9286751.1">