I know it's not Friday but it is a holiday....
My daily driver is a '90 T-Bird LX, 3.8L automatic, great driving car, had
it for about 15 years and is the same year as my Westy (VC).  It has the
electronic dash, great displays, and includes one of the fancy trip
computers that display gas consumption as you are driving or overall gas
mileage.  Even though I've had the car as long as I have I can't recall
actually checking to see if the gas mileage/consumption computer was
accurate.  May have checked when I first go the car but don't rember doing
that.  Well, on the last tank of gas I did, compared the on board computer
to actual calculations and I'll be damned, the thing is right on, displayed
19.8 MPG vs calculated 19.86 MPG.  Damn it's nice to have something like
that work as advertised.
BTW, I would LOVE to be able to transplant that whole dash into my Vanagon.
It is, overall, the best 'driver oriented' dash design I've ever owned.  All
displays (speedo, tach, oil pressure, temp, and electrical system) are well
laid out, easy to read, and actually visible through the steering wheel.
Hum, maybe a project if the T-Bird give up the ghost.  Nah, part it out,
that dash goes for about $500 at the wrecking yards....