An interesting problem. You are not going to find an off-the-shelf solution. You will need to design a mounting system for the pulley and will most likely require longer studs to mount both the wheel and the pulley. I would think about mounting the wheel with the stock lug nuts and then mount the pulley with another set of lug nuts.
Not sure what size the Toyota bolt circle is, but it may be getting close to the bottom diameter of a 6'' V-pulley.