I'd ordered a WPL B1, "1/16 scale" M35 truck kit. It's small. Quick search and sloppy measurement, it appears to be 1/17.5 or 1/18 scale, and looks like a minitruck next to the cars.
Looked awesome, scaled wrong. Might as well make it weird...
Pic i can't find.
I had gotten this 'Nylint Classics' 'metal muscle' truck from my grandma for a birthday some time in the 1990s. They had atleast 5 trucks in the series: Dump, Stakebed, Tow, Fire pumper, Fire ladder.
I shortened up the wheelbase a little, trimmed the frame length some.
Then i put the fixed end of the leafsprings at the outside, and went spring-under axle. Trimmed the bumper off the rear crossmember, and pulled the trans out for now.
Then some internal body trimming, and a little chassis crossmember clearancing. Which got me to this point.
I think this might just work...