Young guys in my area scour the countryside for old large trucks. Drag them out of the fields and barns.
They keep their eye on what the local wreck yards have at the time. The prize is finding a running Cummins diesel and chassis.
Then it's play time. Shortening frames is not a problem with these guys. If the track is too wide, open up the fenders.
Let's say beauty is in the eyes of the beholder. Not my cup of tea.

You can do something like Ricky:
https://www.stovebolt.com/gallery/turner_ricky_1945.html

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."