Also remember that when changing wheel diameter and/or offset, it can do funny things to steering geometry and handling. Since a lot of these old trucks become "Cowboy Cadillacs" that seldom if ever carry anything heavier than an iced-down Yet cooler to a tailgate party, the steering problems don't really show up until somebody decides to haul a full GVW load somewhere.
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!