i know it is not my car, but i seriously urge you to reconsider very carefully about putting a Japanese engine into the Beemer.
it is a machine alright, but it is a rojak machine, you are "bastardising" a quality enginners German machine. just imagine you have a Ferrari with a modified Skyline engine. the skyline engine lets say with 600 or more bhp, ofcourse more powerful than the Ferrari V8 but it will feel and look odd.
to the mechanic who converts it for you asl
1. how did he convert or weld the mounting.
2. after welding the mount, how can he guarantee the welding is strong and will not have rust probs.
3. how he positions the mount so that the postion is correct for the driveshafts to connect to the arms.disc brakes/wheels? what software he use to calculate this?
4. how does he mate the wiring with the German wiring.
5. before your E30 was created, engineers spend a lot of time and money to get the correct setting such as correct engine positioning, engine mapping - a lot of thought have gone into everything right to the last detail.
i know as malaysian, we have to support the spirit of malaysian Boleh, but the
big question is
1. how qualified is the mechanic that is going to drop the SR20 engine into your E30? is he smarter than the Germans?
same thing goes with those who fit Skyline or Supra engines into Volvo 240s.