u/Global-Location-2160

I do have a question I bought an aftermarket front and rear M bummper for my E39 , and my question is how can I make a propper break and alternator air vent? Because right now it just hanging around whitout any propper fixing and the alternator vent is Will not gonna have any air flow, I do have a 3d printer soo i can print also Custom part's for this maybe somebody have an STL file for it (I do not search anything right now).

I just curious how you guys would made that ,and maybe I could copy it or get any inspiration