Disc brake front hub/spindles from ‘91 to ‘01 +/- GMC P-3500 HD trucks will fit your 2 ton front axle without tires sticking out of the fenders with 5/10 on 7.25” wheel bolt pattern. Need to make or get new king pin bushings. Rear disc brake D-80 with that bolt pattern will fit, too. 22.5” rims with that bolt pattern off late ‘50’s trucks are rare, but do exist, so lookout for them on farm trucks, school buses. Otherwise 19.5” tires have similar OD to original tires.

Hang out here for a while, most of your questions will be answered.

Ed

'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.