The position of the steering gear and the angle of the steering column on the forward control chassis will be noticeably different (much closer to the front and more vertical). That's because of the radically different position of the driver's seat. A 3/4 ton and a 1 ton chassis will have 8 lug bolts on the wheels, and 17", 18", or 19.5" tires- - - -1 1/2 ton and bigger rigs will have 20" or 22.5" wheels and a different number and diameter of lug bolts- - - -5,6, or sometimes 10 lugs, depending on the specific build sheet for the truck.
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!