That was my second thought Steve
Its just that I have noticed that when fully loaded with family and luggage (i.e. dog) and traveling at speed, braking to a full stop does suffer, which is mainly due to the front brakes (they look just like the orginal cast iron ones, but are only one size bigger) with the non-vented disk.
Therefore I still hope to come up with a solution to mount a nice alu Brembo to the front. Problem there is the spindle, its different from a type 1 so a 944 adapter bearing is maybe not possible...but let me worry 'bout that for a while