What's your color? Also is the ti exhaust essential?
I wouldnt say any arnt desirable in their own way white is the most popular and most sold by far ( then black then silver) red is the least sold with less than 5 for 2015 and probably that little or less for 2016
What's the weight difference between the exhausts. Is red a desirable color since there aren't many?
most desirable is probably the matte gray since its now by request only but then again the long term upkeep of the paint is a factor. I had the opportunity to have mine in matte gray but turned it down
Ti is 100% essential if you are leaving it stock then again if you modding not sure why one would want the NISMO in the first place ( just my opinion)