98 GT motor would not be the easiest choice for a swap.. 99-2004 would be a direct drop-in, the 96-98 4.6s had several differences. Main one being the PI heads/intake ... I'd suggest continue looking..
So what did you do to blow the motor up in your GT?
__________________ 2012 IS F Blue IS F Sport 2006 Mustang V6 wannabe
What exactly do I need for a 4.6-5.4 swap i have looked around and no one can give a exact answer they just start talking about other stuff.. Would be great if anyone knows about a step by step guide for this swap