Best place to ask that question would be at this forum for FE's. As I understand some of the marine engines were reverse rotation and a lot of them were cast for side oiler's but not built/machined for side oiler's.
A forum community dedicated to Ford performance owners and enthusiasts. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more!