He says he hated the look of the original clips.
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Yeahhhhh... That smells like bullsh*t. PO's will say anything to get their vehicles out the door. I'm fairly confident he rear ended someone, and he combined body panels from a different truck. You should have someone check the frame, just to make sure it ain't tweaked. How does the wear on the tires look?
Post a picture of the brake and accelerator pedal. That'll tell us if you have a 48K truck or a 148K truck.
You posted on the OilBurners forum asking if you got a deal. I'm not going to sugar coat it, but unless that engine bay is as clean as when it drove off the lot in 1986, and there isn't any rust, I wouldn't pay $3K for a 2wd quad cab non-turbo IDI with 148K. Especially if it is running odd, which is inspiring you to replace the IP, injectors, etc. That's a major investment, which if it was time to replace fuel injection parts, it should have brought the price down a bit.
Regardless, should be a fun project truck. IDI's are fun. Hopefully you won't get IDI-Addiction, which starts with a truck, and ends with you having excess engines and vehicles in your garage to the chagrin of your family.