How can you measure the difference between the 90 and the 91-93 GT front fenders? I have aftermarket front fenders with no visible part numbers on the fenders. The 91-93 GT front fenders are larger to fit the larger 16x7 pony wheels.
The wheel opening at the bottom was aprox. 1 1/2 inch larger on a 91-93 than the 87-90. If you have a set of fenders and are trying to compare you would just measure across the wheel well at the bottom of the fender.
Does the fender flare out more at the top?
No, that did not change...just the opening .