230 and 250 engines run the same engine block- - - -the difference in displacement is the crankshaft stroke length. Neither one will bolt into your truck without major modifications. A 1962-up V8 bellhousing and some front motor mount fabrication at a bare minimum, plus different radiator mounting and throttle linkage fabrication. Then the fan will run way too low on the radiator for efficient cooling.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!