I know that the 17" 94-99 3GKT rims will fit with no problem, but I am unsure about the 16" 91-93 rims. They most likely will fit as long as they have the same bolt pattern. The 3G RX-7 rims are 16x8. A pic of them can be seen on my signature (more pics are on my site). They are chosen because of their light-weight (13.8lbs for early RX7's equipped with PFD rims).