87 4000Q vs 88 80Q

[resops@excite.com]

I am going to buy my first Audi in a few months and I
am curious which audi (4000Q or 80Q) is a better vehicle?
Since the price is close that is no problem. I was wondering which of the 2
cars is cheaper to maintain? I am also wanting to put a turbo charged motor
in it after I learn about the car. Which of the 2 cars would be a better
candidate?  I understand that the 80 Q has torsen diffs.
How much better are these diffs vs the open/lockable diff
in the 4000 Q? Are the torsen diffs harder to maintain?

besides all these questions, if you have any other info that could help me
decide please don't hesitate to email me

                                        thanks,
                                        
                                         STEPHEN GUTIEEREZ


                                      
                                  
                                  




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