The c.o.e. was originally owned by P-I-E ( Pacific Intermountain Express )Trucking company. I'm doubting gas and diesel prices were an issue back in the 50's and early '60's when this truck was in service but agree that torque would have been the deciding factor as these trucks drove up and down the west coast with most of their trucks pulling double trailers. The truck doesn't appear to have the lower running boards so I can see the owner not wanting people to stand on the gas tanks or climbing on the flat bed and falling through the rotted wood to take a peek at the interior.
I'm surprised anyone would respect a no climbing sign. When my employer rented my '53 for a produce display my radio antenna was broken off, the post for the side view mirror was bent and two young brothers (6&7 y.o.) climbed onto the hood and roof of my truck and jumped around on it. I was told to remove the truck for fear of a liability lawsuit if some other kids climbed on it and were to fall. We get sued on a regular basis.
There is a company still manufacuring Buda diesel engine parts and sells shop manuals to fix specific motors for the purist but I'm sure anyone with some welding skills can make a Cummins or Detroit diesel engine fit.
JIM COUSINS
THE BUDA ENGINE CO.
241 AERO DR.
SHREVEPORT, Louisiana 71107-6701, USA
Tel: 318-222-3348
Fax: 318-424-9231