IMO not worth the effort. Reason - 1995
4.6 SOHC 2v ...
- NPI heads - 210HP / 270ft-lb MAXIMUM with dual exhaust.
- leaky valve seals. *FoMoCo improved design in 1996.
- depending upon build date, the PCM will be ECC-V -OR- ECC-IV
If you're looking for a Panther platform 4.6, get a 2001-2002 for your 1998 F-150.