Not running is always a tough one to call.
Could be the IP, ask the seller why he/she thinks that.
Could be the PMD, this is the post mechanical injected engine, the PMD was known for cooking and going bad. aftermarkets developed a relocation bracket for that.
Could be a faulty lift pump.
I believe this is still old enough to have the crankshaft/block cracking problems. dunno if that would contribute to the no starting. Id bring a few batteries if it were me, and at least see if the thing cranks without any odd noises.
as an ex car salesmen, the fact that they say it has a bad fuel pump, and have made it pretty clear that you cant even crank it, makes me nervous. At the very least bring a breaker bar and sockets and see if the engine turns over smooth.
States might need an ignition switch.
Ask if the truck ran when it was parked. as in, after whatever collision caused all that damage to the passenger side. how long did it sit before the batteries were pulled.
The NV4500 is nice
Its gonna have an IFS, great for the road, from what Ive heard not that great off road. But i have no personal experience with it.
guess it depends on what you're gonna use the truck for. As a beater, Id say its at least worth a look. I believe the IP is $700 for the part, and a days worth of labor... say 8 hours for a tech charging, $100 per hour or so.
Worst case scenario you could buy it for $400-600 and sell the NV4500 for more than that, the clutch linkage for more $, anything else of value, and then call one of those "we buy cars for up to $400" guys to come tow away the chassis. Youd still come out ahead by a few hundos.