Larry,
I am (or was) about to buy a 1992 E-350 Cabriolet from a friend until I saw the lousy fuel consumption quoted by the deisel conversion guy. It has a blown trans ($1800 quote), but only has 70k miles! If you are interested, let me know what its worth to you, and if I don't follow through, I'll let you know.
The van is in Gulfport, Ms., and my #is 228-697-4055. Call anytime.
Regards,
gary farmer