based on the mods in my sig whats gonna be the best bang for my buck performance wise? header?

 

Vibrant Header/downpipe/high flow cat setup?

 

60# injectors, meth/water, header, downpipe, high flow cat, heat exchanger, dual pass, solid mounts.

That is very vague. What are you looking for power wise?

I would say supporting cooling mods so you can drop pulley sizes safely.

 

power wise the more the better, but one part at a time. 60's and a tune would be nice but theres no one to tune it around here and im not ready to do that yet.

 

buy a hptuners cable... and you can have a tuner 3000 miles away tune you... just takes a little longer, but the end result is the same... record what you got, send to the tuner, they tweek it, you run it... repeat

 

Well get cooling mods. One of the best ways to protect the engine from high IAT's. H/E, Dual pass... Meth/water injection when you can get a tune.

That too.

 

get ottp h/e u will be amazed with how many runs u can do in a row than u can now. or header/dp combo.