All 89-94 (s13's) are 4 lug. I never said JIC is the only company that can do the conversion. They are ONE of the only companies that sell shocks that will fit the Z32 swap. Of course the 5 lug conversion can be done without the Z32 parts. But this is one of the cheapest, effective, and most populars ways of doing it, and the best option IMHO.