Well today I did the rear cat delete and *********d it up royally. leaks like a seive. Decided to go with the magnaflow direct-fit. These are high flows right? Only problem I'm having is finding the right part number for a 2000 4x4 4.6. There's a part number for the 97-98 4x4 4.6, and a number for the 2000-2001 2wheel drive 4.6. Which one do I get. Any help would be greatly appreciated.

 

i would get 94106 cats and take it to a shop and get them to weld it up

 

X2 forget the direct fit, just get the hiflows, the direct fits are not just the cats but the whole y-pipe assembly, very $$$$.. 2 hiflows should be less than $200.