I had those gauges in my last Z a 91 2+2...those gauges still require removal of the needles? I completely fubar'd all my gauges, as the needle shafts pulled out with the needle...the result after reinstalling them...needles sticking at random intervals. Completely maddening. You really need to be careful pulling Z needles off as they are on with some really strong adhesive.. Also, my gauges never had that NR emblem on them...
They are the nicest looking gauges out there though....but I will never buy another set of gauges that you have to remove needles...too big of a chance on messing up your instruments.