These trucks are simply too heavy for commuting. You are going to burn a lot of fuel and wear out the brakes in stop and go conditions. I have a "daily driver" project which is a 93 Toyota 2wd. No-one makes a truck so light anymore. Sure the payload is not great, but thats the whole point. It is good enough to go to the hardware store and get 6 sheets of OSB or the drive to work every day.
I paid $1200 for it and will probably spend an equal amount fixing the bodywork, but then it should last me another 10 years. I can buy the entire frame from a nearby Toyota dealer for $1300 (new). The cab is tiny, an extended cab would have been better, but for whatever reason most I come across are regular cabs. I got 2 leather seats from an Audi TT for $250 which will be a lot nicer than the old bench seat. I'm pretty sure I will get mileage close to 30mpg with it. I had a Toyota motorhome and that got 14-16mpg, was over 10ft high and weighed 6200lb
In Africa and Argentina one can purchase small FWD pickups that get easily 50mpg and are fine as commuters: