Here is the comparison between GT-R and FT-86. My source image of GT-R is from the Nissan Canada web site.
FT86: 163.8 inches
GT-R: 183.3 inches
Here is the zip file that contains the PSD file with two layers (GT-R and FT-86). You can play around with the transparent ratios to see the differences between these two cars....
ft86_vs_gtr.zip