[Meyers]

i have a 98 mustang gt 4.6L 2V and was wondering what all im going to need to make a 03 4.6L 2V motor work in it.

 

[GTRaptor]

It is a straight swap with minor work on the intake lines if you keep the 03 intake.

 

[2Manystangs]

yep, it will bolt in, if your shortblock is in good shape you can just do the heads and intake, it's known at the PI swap...parts readily available on Ebay

 

[fordman777]

Will need to drill hole in the PI intake on the passengerside you will see when you compare them the 98(NPI) motor will have two coolant temp sensors at the front of the intake the 03(PI) motor will only have one on the driverside.