Bringing this thread back from the dead...
I'm getting a driveshaft made this week, so i hope to have my pile back on the road soon. I ended up getting a slip yoke from PATC, the same place i got my 3 pin connector from. It was $135, which beat $200 from Dodge.
I now theorize that the dipstick will be in the ballpark as far as accuracy because it measures the fluid level and the cases and pans on the 727 and 47RH are darn similar. Now i think it will take more fluid to get to the same level. I'll get a final answer to that in a few days.
My biggest piece of advice from all this is find all your parts first. If you are going from a 727 to a 47RH in a 2wd truck, find a drive shaft or a yoke before you even think about starting. There is more than one solution to that issue, but be sure of what you are doing before you dive in head first as i did and then it takes a month to complete the swap. If you have any questions, just ask. Now that i've done the swap, i have a fairly good grasp of the ins and outs. There are several other people on this site that are fairly knowlegeable too.
Finally, my thank you's
PToombs, txs, smokinfirstgen (Derek), and David (my not-diesel-yet friend)
Pete and Tom provided helpful advice on the net and some in person along the way
Derek, David, and I actually undertook the swap. Derek donated the brains, David the shop, and I did what i could
A big thanks to all! Hopefully my next post will be of some fuel economy results