[Need Help Need More Power]

Are the long tube headers 50 state legal as in will it pass emissions, And should i spend the money on a custom tune if I plan on upgrading the motor or should I wait till everything is done.

[Need Help Need More Power]

I do not think long tubes i already have stainless exhaust, when i get all the motor work i will get a nelson tunning or something along those lines

[Need Help Need More Power]

I have a 2500HD with a 6.0 I have an intake, Hypertech programmer, an exhaust. It is fast now but i wanna it to be faster. Im either concerding JBA titanium cremic coated headers, MSD MSC 2 ignition im just not sure what to get I want to try to stay away from internal parts. I want to try to say around $700-$800. Any help would be appericated thank you