Trent that’s a nice looking truck, seems to have a lot of potential and doesn't look like it has much rust. Looking at the wiring, plumbing and just an overview it looks mostly original. In my opinion though you have a lot of restoration before it will be ready to put on the road with any amount of dependability, especially as you say, "it's been sitting in a pasture for 20 years."
Trucks like this are what anyone that is serious about restoration is looking for. If your purpose for getting a truck is to have a everyday gravel hauler then you would be a lot better off looking for a much newer truck.
I would bet the ranch on it, that someone tried taking the line loose from inside the side cover and broke it off. This means that your going to have to install one of those kits that Stu mentioned. And like he explained the line that goes through the blocks water jacket uses a compression nut, not a nut and sleeve like at the ends so it's a one shot deal, once you tighten up the compression nut your done, taint no taking it loose without replacing the whole line.
Right behind the oil dip stick on the block is the engine number that will tell you if its the correct year or not.
Denny Graham
Sandwich, IL
