hello, i have just come across this site and am sure to have lots of interesting reading from it. i own a 318 ti which had the early m42 engine that has been stroked with cams and pistons etc, i also have a 316i compact that i have fitted a 2.8i engine into. on both cars i have a medium case 3.9 lsd, e30 325i driveshafts, 318ti strengthened disk brake rear arms along with the 328i brakes and non power steering racks and converted electric assisted steering columns. the picture was when the m42 was still 1800cc and just had the throttle bodies on and mapped ecu. the video is the car with the stroked engine etc
https://youtu.be/QJIAoHgElyc