Need help on deciding which headers will work best with my set up

[progrezzive1]

Hey guys i am looking for some help on choosing some headers for my 06 mark lt . Some guys recommend long tubes but i don't think its worth all the headache and modification to get them to work properly but on the other hand i have seen guys on forums saying that shorties serve no purpose can some one help me out? i have the gotts mods and am purchasing a gryphon with canned tunes, i also have magnafloe cat back exhaust 3 in 2.5 out.