need advice cab/ floor

[Softpatch]

I'm at a point were I want to redo the floor in my 59 viking
when I removed the trans hump
the floor or what is left buckled on pass side .
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I borrowed an old bumper jack to try to push the bottom of the cab out
didn't work ..

Any idea how I can push stretch the cab out to lay the floor and get a proper gap so the pass side door will close.? thanks .....Sp
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