Well, took me some time to figure it out. The M3 bumper fits perfect over the plastic bumber insert (The fiberglass piece) as soon as you cut some little edges off the bottom. Then, the Blinkers from the ALU bumpers fit in the M3 perfect, change the bumper mounts to the ones for the plastic and loose the tow hooks. A couple of Aluminum brackets behind the side lights being screwed to the fender - and you are done. I'll see if i can find some more detail pictures - i know i made them. hope that helps..... And is case of the convertible, i also changed the sheet metal between the fenders in front. That has not be done in the version postet - stand by for more....
///A