Anyone wanna make sure i got everything i need and not forgetting anything

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OBX S.S. Headers 99-03 Ford F-150 5.4L (No Cats) - Stainless Steel Headers

Hi-Flow Cats x2
Magnaflow 94106 Magnaflow Pre OBD-II 49-State & Canada Universal Catalytic Converters - Free Shipping on All Orders @ JEGS

Stainless studs and locking nuts

OBX gasket any good?

2.5" Piping il pick up from a local shop bend and weld in

I'm having trouble with either Magnapacks or dynomax bullets I'm trying to get a nice deep sound, but obviously as loud as i can get without having a ton of rasp.

If you could help with some links or part numbers i'd really appreciate it.

trying to get as close as i can to that deep sound if that helps.

As for the 02 sensors i'll buy a tuner (recommend any?) and turn em off, ive got bigger tires and rims, and need to change the shift points anyways, and when it warms up the 6" lift will go on, to damn cold to do anything in ND this time of year.

Truck is a 2003 f150 5.4 super crew