I'm assuming you want to DD a 40 year old mini-truck because it is simple and you can fix anything that breaks(assuming you do your own mechanic work). 55mph on the highway in a 4cyl gas mini truck 2wd is likely a 22-24mpg venture. The holy grail of fuel economy in a mini truck are the isuzu diesel AKA Chevy Luv pickups. 75MPH top speed running AC. 82mph top speed with air turned off. Hard to hold highway speed on uphills without downshifting to 4th. Will get 40-45 mpg on highway and 35-40 in town. They are actually quite quiet on the road compared to most diesels, but vibration sitting at idle is there. You'd be hard pressed to find one for sale that isn't really in bad shape now. Rust and poor quality interiors are the norm for 80's japanese trucks.
late 90's ford rangers are good vehicles. 98' with 5speed and 4cyl got me 24 in mix highway city driving.
Americans today are alot bigger than Japanese. We are also fatter on average than people in the 70's and 80's. Those small Japanese vehicles from the 70's and 80's got good fuel mileage because they were small, with small engines, and gasoline didn't have ethanol. If you're under 5'10" and 190lb you'll probably be comfortable enough in one. Over 6' and over 225lb probably not very comfortable for long.
late 90's ford rangers are good vehicles. 98' with 5speed and 4cyl got me 24 in mix highway city driving.
Americans today are alot bigger than Japanese. We are also fatter on average than people in the 70's and 80's. Those small Japanese vehicles from the 70's and 80's got good fuel mileage because they were small, with small engines, and gasoline didn't have ethanol. If you're under 5'10" and 190lb you'll probably be comfortable enough in one. Over 6' and over 225lb probably not very comfortable for long.