Old vs. New B5
 

My 1998 A4 1.8T quattro manual body is 'history', but I want to be able to use part on the next B5.

What parts are different between the early B5s (pre 98.5) and new B5s (after 98.5)? I think the center dash and lights (front for sure (one piece), rear also? Fenders, hood).

Interior (seats)?

a) can I swap my AEB (with matching ECU) into a new B5?
b) how bad is 1.8T swap into 2.8 B5?
c) how bad is manual into auto swap?