Well, mine is the four lug disc with a spacer and a wide five adapter. I've got a swing axle rear with a wide five drum setup.
This should be simple, but it isn't. If I had stock beetle spindles on the front I could just buy a bolt on system and be done with it. But I can't find a setup that bolts to what I've been told these spindles are. So I would need to swap spindles as well.
However, I have found a disc the same diameter, but 1/4" thicker. I'm trying to confirm a couple of additional measurements, space enough for the front of the caliper between the rotor face and the wheel mounting plate, and the wheel bearing sizes.