2003 M3 6MT Slicktop
i think you are pretty much there. you will need to slightly oval out the hole where the bolt goes into the top fender rail. you will not see this, the bolt and washer cover this. just use a "rats tail" file. i would stick with this, because it really looks so nice on your car, especially with the real M3 mirrors. if you do give up, just take it to a pro. my shop guys worked wonders by the front nose hold downs that made it sit perfect compared to looking ok. it really is an art that is learned by experience. the part of the fender by the door i know what you are talking about. you will need to fine tune this. one last thing is you can move the whole headlamp housing some(think three bolts). this can make things look cleaner and flush.