What engine are you planning on using? There are directions on here in using a GM 2 ton front axle, adding GM P-30 spindles. If you want a wider front axle, modern GM P-30 and 3500 have heavy capacity front axle with ff 14 bolt or D-70/80 rear for which higher ratios/disc brakes are available.

Ed

Last edited by EdPruss; 12/23/2019 3:59 AM.

'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.