Any suggestions for my '89 Audi90???

[Elizabeth Monacelli <violin@sprintmail.com>]

Hello!
This is the 1st time I am posting a message.  I love your group!  
Anyway, now to me dillema!  

In June '96, I purchased a 1989 Audi90, for $6,300, with 51,000 miles on
it.  Before I bought it, I read the used car price guide and brought it
to several mechanics to check it out.  They all thought it was in
reasonably good shape.  BUT!!!  As part of my warranty agreement, the
dealer who sold me the car, agreed to fix the brakes.  Unfortunately,
that did NOT happen, so I ended up bringing the car to my local Audi
dealer to get the brakes fixed (BTW, while the car was there, the Audi
place bashed into the rear of my car!!!!).  They DID fix the brakes,
BUT, they had some questions for me about the odometer.  It turns out,
that the car was originally purchased at THAT Audi dealership, and they
just happened to have a track record of the miles on the car!  The paper
read that in 1992, the car had 90,000 miles on it.  THEN, I got a hold
of the 1st owner, and he told me that when he traded the car in 1994, it
had 135,000 , miles on it!!  
  I guess my question to you all, is this!  Should I keep the car or
should I get ALL of my money back from the dealer, since the police is
currently working on the case?  I am REALLY torn with a desicion,
because of the following reasons:

This would NOT be my main car, so I wouldn't drive it around a whole
lot.
I absolutely LOVE the car!
So far I have had to fix the following: oil leak, transmission leak,
brakes, oil pan, new windsheild, crank case hose, power steering hose. 
The mechanic said the engine seems to be in good condition, and the
battery and other misc. things are all in running order.

I have never had an old car like this.  So in all your opinions, once I
replace things that need to be replaced, and keep the maintance up,
shouldn't I be O.K.??

I would appreciate any advice  and/or opinions anyone has. :)

Thanks,

Elizabeth
401-781-9687
violin@sprintmail.com