Have also used ARP studs in the last engines that I've worked on. I have been to their manufacturing facility. And yes, they are very familiar with the Model A.
Dear hard times,
Yes, the dowels at VERY important. Without them, there is a great chance that your flywheel bolts will shear off and cause many problems.
I would suggest that any books pertaining to the Model A would be wecome at the soon to be open Model A Ford Museum in Hickory Corners, MI. Check the MAFFI website.