my M44 box and prop etc is just lovely.... the diff is crap, i'll admit - the ratio is awful...
i have got the correct gearbox for my car - i just couldn't be arsed fitting it when i done my conversion. mine was OBD2 and the M50 was OBD1 - i had a little headache getting it to crank and spark, so i just ripped out the immobiliser (as was the advice from a BMW breaker yard near my house) and took turns licking and twisting the wires until it started!
i'll search for an auto ecu and complete harness
thanks again pal