I have a sunroof in my 260Z, couple of problems.. main one being it takes away almost 1inch of head room! I am 5'11" and just clear it with the no spacers under the seat, but when I put a helmet on it hits.. (this may vary of course with different models of sun roof..) Other problem is heat, might be nice in a cool climate but I find that with the inadequate cooling in the Zed that on a hot day it is like driving a sauna !! I should add that it is the smoked glass tilt style type. It is going as soon as I can afford a new roof... Regards, Peter