What do I need to do the conversion?

[samcat]

I have a 1973 1303 Superbeetle. The one with the curvy windscreen. The suspension is the three bolt fitting type, and I am running Kerscher narrow front suspension and kerscher/koni rear dampers.
I want to upgrade my braking to units from a porsche, preferably front AND rear.

So what parts do I need, from what model and year(s) of porsche?

Lucky thing is I have a friendly porsche garage just down the road (5 mins walk!), he's independant (not a dealership) but gets tons of good bits in/passing through. So I should be able to source whats needed

Cheers for the help,

Sam Catchesides,
Bristol,
UK