Dragged this home today

[gmc684x4]

Debating how to use this frame do I add get the rear welded back up
one Po cut the frame down shorter then a short box dimensions
I measure 25 Inches rear axle cl to end of frame my understanding is it should be 33.50 inches for a short box

are there much difference in 1/2 to 3/4 frames I have two 69 c20 leaf spring trucks I can swap a arms and rear diff with control arm cross member

A quick look locating the trailing arm cross member should be easy using the front box mount hole as the share the same rivits

[gmc684x4]

From what i have looked at the c10 arms will bolt up to a c20 member
I will have to pull forword my c20 parts truck and measure frame width
At the diff see how they match up it has the trailing arm member with no brackets

Funny i never wanted that c20 came as a package deal take both trucks or take none