Well I made it home.
I was VERY lucky to have found a shop run by a young guy who just opened up his own shop (after working at a residential shop for many years) and agreed to let me "help". FedEx delivered the pump by 10:30am to my surprise. We had the old pump out in about an hour. About 2.5 more hours to carefully install the new one, and put everything back together.
Total cost of the adventure:
Pump $210 (I know know I probably didn't have to pay that much)
FedEx $95
Night in the hotel $129
Dinner, breakfast and lunch $60
Labor: $165
Tip for the shop owner: $40
My first real engine experience with my W113: Priceless.
What I learned:
Taking the radiator out of the bottom isn't really "easy" but probably still better then messing with the hood.
That shroud is a huge PIA. I came real close to just leaving it off. Trying to keep it out of the way while sliding the radiator back in from the bottom really sucked.
The oil cooler does not need to come out, the radiator slides along next to it and is secured to it by 2 carriage bolts.
Putting the fan/coupler back on the new pump is a real PIA. Trying to place all 4 bolts in the fan flange, fit it up to the pulley and hope that the pulley, spacer and pump flange holes all line up is near impossible. One idea I came up with was to put a rubber band around the bolts, just below the heads, but on the fan side of the flange to hole them there while you fit it up to the pulley/pump and get one of them started. CLEAN the bolt threads well, spray some WD40 on the threads so they go in real easy. That allows you to spin them in most of the way with your fingers. Once you get them in, grab the rubber band with a pair of needlenose and just yank it off.
I was on the road at about 3pm, 186 miles home, the car ran VERY well. Stopped and checked for leaks a couple times, temp stayed rock solid on 190 the whole time. No leaks.
Here's a pic for ya:
Thanks for all the tips/support/help. Hopefully this thread, like many others will help someone else....