Hello Bob - let me answer what I think I can.
You may be able to remove the dents out of the old pan. As for getting a different style new one, I recommend you try 'the usual suspects' parts suppliers like the Classic Center or Dr Dan. Also for a new oil pump (with a different pick-up/intake rubber widget at the bottom) and gasket.
Removing the hex nuts to remove the pan I think can be done with just about any old hex wrench, maybe getting one with a handle and a longer stem would make the job easier, but I don't think you should have to get any Samstag or MB-special tool for this.
I read before that people can take a reading of the main bearings after removing the oil pan. But I can't figure out how this can be done, at least not without removing the lower endcaps, which takes some major force etc. So I suppose that's what would be involved there; and the bolts to be undone may be stretch bolts, that have a limited (tighten once-only?) lifespan. In short, you may not want to tamper with the bearings, unless you suspect some problems, unless I am making more of it than necessary now.
Good luck with the procedure!