fitting 911/993 brake setup to a 70 bug..

[VRSICK]

Hi.

I recently bought a set of 911/993 brakes/rotors. I've seen the article on fitting these exact brakes on a bug (not sure if the year makes a difference), but I have a few questions....

What size wheel is the minimum to fit on these brakes? I have 16" fuchs, and i'm worried I may have to goto a bigger size. Also, how difficult would it be for an amateur like myself to put these puppies on?