1970 K20 Parts Truck Value

[noco-k5]

I went and looked at a 1970 K20 tonight. The truck is rusted pretty badly rockers, bed and floors are all pretty rotted so it's too much of a project for me to take on. The guy wants 3k for it, but seems very negotiable on the price. What would this be worth as a parts truck? It has a 454 that was put in it at some point but sounds like the cam has wiped a lobe or something and is a 4 speed. It runs but definitely needs a ton of work so not sure it would be worth saving. Any thoughts on what drivetrain parts are worth? It has a set of tow hooks on it so I'm definitely buying those for a decent price.