Retrofit trip computer on A4?

[Shane & Elaine Hinshaw <aidan@bmi.net>]

Howdy,

Just bought a '96 A4 (after three years of slobbering from afar).
Have a couple of questions:

* anybody know if dealer (or someone) can install trip computer as a
retrofit--or is it too extensive?

* fuel gauge indicates only 7/8 full--even though i've waited for things
to settle before topping up. Is this a simple problem with gauge/sending
unit, or has anyone seen similar problems in this model? (can't really
tell for sure, since even after running it down into reserve territory
the fill up is under 13 gal.)

thanks!