I had a white one like that, '98, and a white like that '99 gas. Like both trucks, except turns. I am a fast food junky, and that truck does not like many certain drive thru. My local Taco Bell mgr asked me to let him know why I hated some of his landscaping.
I'm with jrsavoie, I'd drop in a new engine. Long bed srw 3500 ride is fixable with air bags and a few less leaf springs. Then when you need it, air up for max load.