All good to know, and things to check for. I'm replacing the studs on the rear axle (series V) as they are loose in the hubs, so getting the HD ones from Sunbeam spares in England, along with 2 Diff gaskets (Only place I could find these). I will have my local machine shop I have used for years, do the drilling to 1/2" for the larger diameter of the Splined portion of the studs, still 7/16 x 20 threaded section. and get those pressed in. I'm leaving the fronts alone, as they are all tight, straight and show no signs of being stretched
For safety and ease of use reasons, I bought the BendPak Quickjack BL-3500SLX to get the car up in the air and off of the wheels. A car being a light as these are, it's pretty easy to hip check on, and knock it off the jack stands. (I know this from experience), so with the Quickjack, it will be FAR more secure as I wrestle the series IV rear end out, and put the series V rear end is...after complete bench overhaul and Pumpkin swap. Since I will be doing this all alone at a remote garage I didn't want to be found dead under the car with it laying on me by the garage owner when he returns from a 3 or 4 week trip.
Waiting for the last box of parts and the Quickjack to arrive, and THEN the real work begins.