Factory old iron just can't compete ... ??

The 6.4 4x4 we have at work is named “The Beast” for good reason. It’s basically a Power Wagon. I’m glad I don’t have to pay for gas!
A correctly built 360 or 5.9 and the same 8HP would be a beast too.
Honestly my old 72 Power wagon with 360 / 727 empty or loaded with tools was 12mph
My new trucks with fuel injection and same tools 12mph.