WickedM4

I bought the "no plate" OE front trim piece on my e36 and never got pulled over for it in 6 years and it was never noticed or mentioned the one time I got pulled over for a tail light out.  If I were you I would not drill the bumper.  Maybe you have to pay a fine once in awhile but I wouldn't think you would get bothered much in a car like that.  But if you get stupid with an officer they might look for everything possible.
Just say there was nowhere to put it on this car, get a tow hook mount if you get a "fix it" ticket and need to get it inspected that you installed one.

I don't run one. Was pulled over for it. No ticket.
Gf doesn't run one. She was pulled over for it. No ticket

I looked at Vorsteiner before I ordered and I'll be honest .. I've heard a ton of people complain as much about fitment issues with them as well as any other CF manufacture, I think with anything molded like this, it happens from time to time.  I talked to a couple guys on IG (DarksideM4 and Darthvaderm3 .. his car is even in a few pics still on their site) who talked me into a company called RWCarbon (http://www.rwcarbon.com/).  Matt there was awesome to work with and they're like 1/2 the price as Vorsteiner and make exact replicas.  I'm not trying to say they're as good as Vorsteiner might be, but for 1/2 the cost I've had zero issues so far and I know a lot of guys running their parts who are happy with them. 

If the weather holds out, I'll come.  Looking forward to it.