Need to replace Cab Mount Supports...help

[airbrushguy]

Success, got support out with plate still in, but removed top flooring piece above plate. Now I still have reference for bolt position through floor plate but since there was only about a third of the support left when I started, it's hard to tell whether support goes at 90 degrees to subframe or any other angle??
Also should front of inner rocker be at 90 degrees when I put an angle degree gauge on it?
All looks good when clamped in position, but need to screw it together so I can hang door and check gaps and alignment.
Should I do cab corner before door? Corner seems to have moved out despite reinforcing rods....