whaddya guys think?

ive already got:

dinan stage 2 suspension
conforti chip
dinan cam sprocket
fahey track pipe
brand new tires

i was thinking maybe either:

cat back exhaust
light weight fly
MAF
headers

what do you guys think would be most beneficial in terms of performance and power gain? is the MAF (split second) really worth 1000 bucks?

I'd say headers. Then put on an exhaust when you get more more to spend.

Headers or exhaust.. The only reason I don't immediately say headers is that i've got headers and still haven't even gottem fitted so I can get them installed. (want to get them Jet-Hot coated and don't want someone to weld on them after)

Who has the headers that produce the most HP and who says so?