Hi, new member here. I had an 82 F100 but sold it because I was making Saudi kings and Texas tycoons rich. Is there a way I can get 20+ mpg, maybe even 30, out of an old 70's or 80's model truck? My options I was thinking was doing a modern swap for a new engine, wiring, etc., and the other option I was thinking about was if there's something I can do to greatly improve the MPG on an old truck from those years. I think I was getting less than 10 MPG in that F100. Any suggestions on an old 150/1500 size truck with certain specs that would make this more doable, please let me know. I am just looking at what to buy now, but I like pretty much all the late 70's, 80's, and even up to mid 90's trucks. Ford, Dodge, Chevy, GMC - I'm open. I have to say, I really like how the Fords look (I know that's probably gonna tick some people off but I'm not a truck expert at all). I would also like to keep the good sound of an old truck (I had a friend suggesting making it electric...). I think if I could it with keeping the old engine, it'd be best, since I'm assuming the resale value is a lot of the old engines. If I could get an idea of costs, too, I'd appreciate it. If it costs way more to do the modern engine rather than modifying the old ones, that would change the outlook