I own a 87 spg with the 4 lug pattern i saw an 87 900 turbo w/ the five lug pattern aero wheels? how is this possible they looked great on there here is the ebay # 1822836264
did he change the hubs in each wheel and are the hubs for the five lug comparible in size with the hubs for the four lug?

does anyone know if the rotors for the newer 900 or 9-3's are compatible in size with an 87 spg b/c i wanted to put the five lug setup on there and u have to change the rotors i know and the hubs well what else or do i have to ask the dealer?