1940 3/4-1 Ton express frame measurements

[1940_3/4-1Ton_Express]

I have a 1940 express truck that was my grandfather's farm truck. It has a 1 ton rear axle(17" split rims) and a 3/4 ton front axle (16" solid rims). I have removed the axles for sandblasting the frame. Now that the frame is primed and installed on the frame table, I noticed the front of the frame is slightly bent. I have been searching for any dimensional information to straighten it back out. I can find the 1/2 ton frame dimensions, but not the 3/4-1 ton. Any help is appreciated. My backup plan is to take a bunch of reference points and triangulate to the opposite side.