292 all the way! It will out-torque the 283, and you won't have to downshift it every time you head uphill with a little load on. The 350 might get a little better gas mileage than the 292, but the 292 is designed to be a truck engine- - - -much better low end and midrange pulling power!
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!