Lightning Supercharger
you might be able to use the supercharger,but you'd have to get atleast a different lower intake and i'm not sure if that would all work.the 5.4 has a much higher deck height than the 4.6 so it won't work.but there are plenty of other superchargers for a 4.6,the best thing to do is get a kit made for your engine.if you ever look at a 5.4 and then the 4.6 in the truck you'll see the difference,i didn't notice it till i saw my freinds 4.6


