I would pass....unless you really enjoy headaches and have $$$$ to throw away---{if so I'll pm you my address
}
8.2 Detroits are prone to all kinds of head gasket issues, are not replaceable cyl liners, inj tubes prone to leaking coolant....basically a blue boat anchor
We used to refer to them as "8 point PUKERS"
Alot of them regardless of GM or Ford chassis, required the eng removal even for just the heads---cab interference....COULD be done with zip ties and clips on the head bolts and push rods, or section a piece of floor pan out from the pass side
Besides the need for dial indicator type inj timing tool--specific to 8.2's, the racks are relatively straight foreward--IF you are familiar with Detroits...
$500 might get you some decent cores or cab chassis parts----if you can floor plan the money that long till they sell
Best of luck however you decide