Hi
You could use stock 4 stud drums instead of discs and do the same thing, the disc will give a slight track increase of the drum. If you then studded the brake drum to 5x130 that would work.
On my old 1302 I used 5x130 bug discs with the braking surface removed, then bolted the Porsche rotor on the back with a spacer to get the offset correct in the same manner that Porsche rotors fit up.
Steve
