[csavaglio]

I'm not much help on this, but my mid-production '91 steel blue (#732) was redirected to the Mesa Proving Grounds in Arizona mid build......on the build sheet, the original dealer was crossed through by hand and redirected to the proving grounds.

I was never able to find out much more about the car, whether it was used for performance testing, reliability testing, a local exec's company car, etc.

I do know the Carfax only shows owners back to '94, so a full 3 years after it was built. I'd have to look at the mileage it recorded the first time it was registered, but I believe it was around 15k miles.

If I recall correct (and it's entirely possible my mind isn't working right), the time on the build sheet is when the build sheet was printed, so it roughly corresponds to the car's production start.

I know I'm not a whole lot of help, but my car sits in that mystery zone too. I know '50s and 60's Vettes that show proving ground delivery on their build sheets are considered valuable, but that's in the eye of the buyer to place a monetary value on that sort of thing.

Chris