Originally Posted by SpyderSenseOC

I have to say, I have a lot of trouble determining what I'm looking at sometimes when a 991 or 981 (or even 911 v. Boxster/Cayman) rolls by. Is it a 911 cab or a Boxster? Is it a GT3 or a GT4? What is the dead giveaway? Am I car blind?

I've been a car guy all my life but I struggle with these P-cars. My kid thinks I'm losing it. Is it the height of the side intakes? The contour of the front air dam? The area where the door glass meets the glass behind it?