I have also done something similar.....on the front of a type 3, i used the front discs with 5x100 bolt pattern then machined off the brakesurface so they would fit in a rotor from a 2001 jetta 2.0 then fabbed up brackets and used a caliper from a 96 jetta 2.0 and voila........bigger brakes w/floating calipers using al stock vw parts! (except for the custom bracket)
http://www.franklinsvwwerks.com/phpb...760&highlight=