Horsepower suggestions?

[BBall_fan]

Any advice out there for adding more hp to my gen. 3 03' X. Have the below mods already with a SCT Flasher on the way. Is there anything else?

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03 Explorer Limited 100yr anniversary edition
Current mods: K&N FIPK, Magnaflow catback, 20"Helos rims, new deck - clarion 745mp, focal front speakers, 2 jl 10w6 box with jl amps.
Future mods: sct flasher on the way, (maf, throttle body, headers???)

 

[metstalker]

i was just wondering what the 100 year anniversary edition was about? the explorer has been out for 14 years or is that ford 100 year anniversary

 

[BBall_fan]

Yeah, the 100 yr ford been around. Special look, different two tone leather than eddie bauer also. V8 with all the fixins'

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03 Explorer Limited 100yr anniversary edition
Current mods: K&N FIPK, Magnaflow catback, 20"Helos rims, new deck - clarion 745mp, focal front speakers, 2 jl 10w6 box with jl amps.
Future mods: sct flasher, maf, throttle body, headers

 

[F14CRAZY]

Since it's a 4.6L, can't you use a good number of the Mustang engine mods?