The PCU 5000 can run from the back or front of the case and needs to be geared correctly for the choice... also, the direction of rotation can be CW or CCW. It can be changed from one to the other but you will have to send it back.
I suspect that the 14 has the routing worked out so you just need to order the right rotation and mount location.
RV7 powered by a lycoming thunderbolt IO-390
turning a whirlwind HRT prop
flying with more than 1,935 on the hobbs