So I figured I kill two birds with one stone and get a custom plate for the M3. I was going to go with a Georgia Tech plate, but I was like let me see if I can get something different. So I asked the woman working there if “E90 M3" was available. Apparently it wasn’t taken, so I went ahead and ordered that for the E90. Since I did that, she transferred the plate from the M3 to the 328i so I didn’t have to pay $20 for a new plate for the 3.