Astro vans don't have the same bolt pattern, as Sy/Ty'sThat would probably be a tall order to find an exact replacement because of the different offsets between the front and rear wheels. Maybe Astrovan wheels, but I'm not sure on that. As for aftermarket, I see a lot of guys use the '93 Vette ZR1 wheels or the knock off equivalent. Allows for bigger brakes and wider tires.