Treat land actually sells a disc brake setup for puch 5 star wheels. Do yourself a favor and do indeed search the forums the search function is very good and there are a ton of good threads. I recently did a rear disc swap using a BMW K100 rear wheel. There is a write up in the performance section. It may be buried but that good old search will guide the way. Also see if the wiki has anything! HOWEVER most will go for a front as it is much easier. My bike is a chopper so I ditched my front and beefed up the rear for the sake of looks.