534 is a Ford, one of the Super Duty engines intro'd in the late '50s:

Ford Super Duty engine - Wikipedia, the free encyclopedia

It will fit in the bed just fine to take it to the scrap yard, or, if running properly, to sell to someone trying to restore his firetruck.

You can make it fit in a PU as the motive power, but it would be a colossal waste of time, energy and money. Try not to vomit reading this:

https://www.ford-trucks.com/forums/1...b-chassis.html

https://www.ford-trucks.com/forums/7...g-a-534-a.html

And the ultimate "I'm stoopid in love with the idea of a 534" thread:

https://www.ford-trucks.com/forums/9...ock-parts.html