There are a few things....the reluctor wheel needs to be changed from 58x to 24x. Or buy the electronic box. The Cam position sensor is on the front of the block and the wires will need to be changed... just swap A and C. The knock sensors will have to be relocated to the sides of the block. If the motor has DOD or VVT that will have to be removed. Also a possible lifter and tray swap and valley cover....