Are the Iroc and 91/92 GFX interchangable? Do the GFX mounting points change over the years? I am thinking of converting to Iroc GFX since they are more readily available and they look just as good I think. Then I can get 18" Irocs too!

 

yes, they can be swapped. I believe the rear bumper gfx are part of the bumper though, so you'd need to replace all of it to get the rear correct.

but if you're just going for the side skirts and chin, direct swap. Kinda been thinking about grabbing a set of the side skirts for my 87 TA cause they look niiiice.