Questions on V8 quattro's front brakes

[chan@seattleu.edu (Anthony K.B. Chan)]

Hey guys, 

Did all years of V8 quattro come with the internal calipers front brakes or
at some point they switched back to the regular calipers? And if they did 
get switch back to regular calipers at which model year did they do that?

How is the general reliabilty of the V8 quattro is like? Is the 100 V6 model 
more reliable? What are the timing belt changing interval for the both
the V8 & V6?

Anthony