i have a 98 f150 SC and i dont know if it has a 4.6 as advertised or the 5.4 that is stamped on the head. does anyone know cause iv serched the id number but it is really hard to read but the 5.4L on the head is unmistakable.

i would also like to know if the summit headers will bolt right up to the stock cats

 

They use the same heads so it is probably a 4.6L.