so you want to drop an M5 motor into your 528i, huh? That can definately be done, but will take a lot of money and cause you a lot of headaches. you will have to not only get ahold of the M5 motor and tranny and diff, but you will need to upgrade the braking system to accomodate the additional power and weight added to the car, you will also need to upgrade the suspension (again, for weight and handling). You must then make an exhaust system that will work with the motor on your car. And I haven't even mentioned getting ahold of the ECU for the M5 motor and wiring it into your car or having to fab up motor mounts and all that jazz. But like I said, if this is something you really want to do, it can be done. If you are planning on having a shop convert your car for you, or even help you for that matter, you should just look into getting a nice E28 M5 (I am assuming thats the motor you are talking about putting into your car), for about the same price or even less than that conversion will cost you....also, you know it will be done right from the factory. HTH.
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1987 BMW 535iS
BBS RS with Yoko AVS ES100
BavAuto lowering springs/ Koni Yellows
B&B Tri-Flow exhaust
MOMO, Alpina, Factory ///Motorsports, Alpine, JBL, JL audio goodies on the interior.
TONS of cash everywhere HA!
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