Okay I need some information. I was told when it comes to swapping in a pi engine in place of your npi engine that you need to change the oil pan from the 1996 engine over to the pi engine (1999) due to a sensor on the pan how true is this? The pi engine im using is a windsor and I plan on moving my coil packs and wires to the fire wall. So could I retain the pi timing cover as well rather than swapping mine over from my npi engine?