It's pretty difficult, because the small diameter of the NA rotor positions the caliper too close to the steering arm. I've done it, but I position the caliper over the steering arm, so the caliper is at about 1 o clock postions (drivers side). You have to remove the caliper to bleed correctly, and the bracket is bolted to the front of the spindle face (where the drum backing plate would go). The offset increase of the setup is in the 10-14mm per side range in order to give room for the caliper bracket (so that it does not interfere with the rotor).
You can do it to the drum spindle, but then the bearings are weird, so I typically do it to the disk spindle (same bearings as BJ bug), but drum is do-able.
Similar to this:
http://www.vdubengineering.com/produ...44NAonCBLP.htm
Easy,
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