Question for you Custom..what technique did you use to lift the cab?
Here in the "mirror universe" I am a few day behind you, and just now ready to lift the cab on my 63 StepSide. I was planning on crossing chains inside the cab and lifting with an engine hoist.
BTW, I looked at mine, looks like yours, so yes that is a factory weld that we have to cut.
good luck! will follow your build!