Hi Trav,
For the OBD connector, try the right front corner, buried above the headlight, that's where the one on my '88 E150 is located.

I decoded my VIN here:
The Ford Truck 17-Digit Vehicle Identification Number (VIN) Decoder

Be careful of the tires. My brother's E350/FourWinds RV had old tires and he blew a back one on the interstate going through Atlanta at rush hour. It took him 3 lanes and a half mile to get it slowed enough to pull off the road. Luckily no one crashed but it probably scared several folks half to death.

It looks like a good project, just lots of little jobs needing doing.
jim