nissan senta rear.... but I had to mod them, the inside of the disk was like 3mm in diameter to small for the diff's flange to go in, not difficult on a lathe, but I'm pretty sure there are 114pcd disks that would slide right over, with no mods at all...
Yes a valid consern indeed, I've been worried about it as well. So much so that I have altered my design to incorporate all 4 holes, though this means the shaft will need to get pulled out, in order to install it. Come to think of it, the shaft need to get pulled to get the drum-backingplate off anyhow, so no biggy...