The axles fit best on certain CV's. So they're orieted to match the CV's they ride on smoothest in this photo. (That took some experimentation)
The CV in the lower left is a type-2 bus CV that came with the axles but matches the ones I have that came right out of a bus.
Above it is one of the other 2 that came from David with the axles and suspension - it has fine thread bolts that are a little thicker than stock. It was also marked 'R'.
The CV in the upper right came from David and also has thicker bolts, but has thick threads. It was marked L.
The CV that's disassembled is one that came off of the axles that came with the tranny I'm using which Rick pulled out of a bus himself and which appear to be original based on the grime layer I had to remove.
I'm going to have to modify 2 of the axle boots so the thicker bolts can fit through them.