I am considering trading for a 90 325is 5 speed. The car is stock, clean,has had 3k oil changes 20-w50 Castrol GTX (this is a Florida car). The timing belt and waterpump have been changed. The only thing that I am aware of that does not work is the onboard computer. The mileage is 95k and the car has never seen snow. What is a reasonable price to pay? What can I expect to get in terms of performance, top speed, fuel mileage etc? Thanks for any help you can offer. Bill