Lost_In_Transmission

Was wanting to pick it up as more of a fun truck and slowly try to restore it over the years due to my budget. We're located around San Diego. Over the weekend tried looking on craigslist, couldn't find very much that wasn't torn up or out of my price range. The seller told me that he replaced the engine on it a couple of years ago and that the new engine only has around 3-4 thousand miles on it. He replaced the gas tanks not too long ago and says that it runs great, have yet to take a look at it myself other than the outside and glancing in at the interior. The interior seems a little ragged but not too horrible. Was hoping to try and get it around 1,000. Not sure about the frame, but yes it is definitely very rusty, so I'm a little unsure. Thank you very much for the information. It's much appreciated.

Okay, so I'm new to all of this, had a quick question. How difficult is it to find a 78 GMC 3/4 ton? Been looking around and have only seen this one which happens to be for sale right down the road from me. It looks a little rough around the edges but still seems to be running very well. Was wondering what would seem like a fair price just based on what you can see, and if it doesn't seem worth it, how hard are these to find? Any help or advice would be very appreciated.