[mechanicalman]

Next step we removed the cab mount brackets planning on cutting down the middle between the 4 rivet holes that held them on. Here we punch then drill two 3/8 holes 24" apart 6" ahead of the front cut and 6" behind the rear cut. We cut the rear cut first to facilitate the harder to access front cut. That's my mentor laying out the lines and clamping on a guide for me to use the sawzall. I have to say the sawzall cuts well but very apt to drift if you try to go too fast. That was the last time we needed the 24" standard.

BTW (edit) we welded in a cross-support on the top but after we un-riveted the cross-member it sprang out on the bottom so we had to use a Model T one ton screw jack and a 2x4 to push it back out then we welded an additional cross support on the bottom of the frame rail before cutting.