Thanks again folks for all the likes and compliments!
So, I got all of the parts in to fix the suspension issues a few weeks ago. On January 6 I started to work on removing the bed to do the C-notch, clearance the center bed support, replace the rear brake hose, and rebuild the rear brakes.
A couple weeks ago, I removed the tonneau cover, bed liner, and tailgate.
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A few days later, I started on the bed lifting. Thought I could do it without removing the rear bumper then thought better of that. The bed was too close to it and I didn't want to damage the paint. That took me a little while to complete. After a couple of trial and error sessions, trying to lift it from the back, I determined that it would work out better from the side...
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I was able to lift it high enough to place 4, 12" long 4X4s between the bed and frame. I used lag bolts through the mounting holes in the frame, to hold the 4X4s in place while I worked on it. Ratchet straps keep the bed in place on the 4X4s. I don't have anywhere safe to put the bed, so that's why I did this. There is plenty of room to do what I had to do...
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After some careful measurements and CAD (cardboard aided drafting... per Vice Grip Garage), i started cutting the frame for the notches and my HF Bauer angle grinder crapped out on the 2nd cut. Just went to Home Depot and bought a decent DeWalt one. Once I tore into it with the new angle grinder, finishing out the left notch seemed to go pretty quickly...
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This was where I called it a day (January 6)