It is a sad story that I often see. It's a super "custom" vehicle that is incomplete and flawed yet the owner has an inflated sense of the vehicle's worth. He even admits that he is sick of working on it.
Some admitted flaws as well as others that are hinted at:
"MY LIST FOR SUBURBAN: If I were to keep this vehicle, I would do the following, in roughly this order:
1. Build front inner wheel wells. Mud and crap gets all over engine compartment and wiring and electrical system.
2. Have dash board painted dark, flat finish to reduce windshield glare. Clean up wiring under dash?
3. Make steps to lower egts and water temp while towing heavy loads. Mechanical cooling fan? Additional radiator under chassis with cooling fans, high flow exhaust manifold, water injection, 4.10 or 4.56 ring and pinion gears.
4. Hot Rod style heater/air conditioner unit with new control panel and make up custom A/C refrigerant hoses"