Hoods, fenders and the rest of the front clip is same for 1/2 through 1 ton, then 1.5 and 2 ton Chevy (and GMC) are different, then 400 series GMC is bigger yet.
I never wanted to believe this for the longest time, but I recently had an opportunity to put a tape measure on a 1/2 ton 47-54 truck hood and compare it to the hood on my '50 4100 - it was about 1 7/8" shorter depending on how you measured it. I swear you could put those two hoods on the ground 50' apart and you'd lose your [censored] on a bet they were identical. lol
Edit: The grilles on the 1.5 ton and larger 47-54 trucks are also different - albeit seemingly identical in appearance, the big trucks' grilles are taller.
