Wilwood rear brake question?

[RBR]

Just got my rear disc brake kit from moser to go with my 12 bolt. I'm looking at the brackets and it looks like my calipers are going to be on different sides of the rearend(front and back). Is this for the shocks to clear? It's going on my 69 firebird. Both brackets have a RH(I assume right side) but the e brake mounts say L on one and R on the other.