Well I just got the same license plate, but have an issue. I should start by saying I have the Cobra Swept exhaust and the lowering spring from Low and Mean. With this combination the center of the axle rod is right in the middle of the exhaust pipe. There is minimalroom between the exhaust pipe and the axle rod, small enough that the lock nut is too thick. I'm going to the hardware store tomorrow to see if I can get a regular nut that is a little bit thinner. I may also have to put spacer brackets on the bottom connection plate for the exhaust to try and push the exhaust out a little more. I just need about an 1/8".
The design of this plate is super easy, however with a few modifications it makes it difficult. So just a bit of a warning!