Originally Posted by WhiteT5
Center bore on these cars is 63.4 mm.
Correct. I sell wheels for a living (I work for Enkei). I deal with all sorts of people that want all sorts of results from their wheel/tire setup. As long as you're keeping width reasonable and offset stays relatively high, you will be just fine. You'll start running in to handling problems if you get to a point that you're having to stretch a tire on to get it to sit under the fender or if you're having to add 3 or 4 degrees or negative camber to get the wheels/tires to stay under the fender.
I just noticed your sig, and the car you oredered sounds like mine. And I have Enkei's on my FoFo ... Great combo ! Get lots of compliments on my wheels all the time