I have a set of JBA 1697S-4, Stainless Steel, Shorty Headers for a Navigator 4V that are New in Box, for sale, (will fit 4V in F-150 also).

I paid almost $700 for them, $475, obo, shipped, my loss is your gain.

Contact: either by PM here or email to mad@madenterprise.com

Mike

2002 F-150, 32V SC 5.4L #001
14psi Whipple and a few other mods
640 rwhp, 610 tq. CA Smog legal.

 

So i take it the 4v navi heads dont use the same head pattern as the 2v heads?

 

Actually the bolt pattern is identical, everything is, they are 100% interchangeable and worth about 50hp on a N/A application, twice that on a Supercharged engine. The difference is the shape of the ports.

Mike

2002 F-150, 32V SC 5.4L #001
14psi Whipple and a few other mods
640 rwhp, 610 tq. CA Smog legal.