The OC4BAv5 is no longer in the SHOP.
The new Oi4FS can be used for both the MSFS and Prepar3D simulators and should be ordered.
User that want to use the PMDG 737 NGXu airplane in Prepar3D should order the Oi4FS add-on PMDG737NGXu for Prepar3D.
Users that want to use the PMDG 737 for MSFS should order the Oi4FS add-on driver PMDG 737 for MSFS.