Re: HEMI Headers - Are they worth it?
With a complete (headers and catback) low restriction system, you should gain ~30 or so hp. Like Escape says, other mods on top of this will yield more gains than they would without the good exhaust system. IMO, it's something to build on if you plan on keeping it. The custom headers on mine were one of the last mods. I had planned though. Only other thing I've done is add a better cam (CMR tune is next), and then I'll probably pretty much quit, unless something breaks, or I can justify major engine work. If you're not laying out a lot of $$$, I'd say go for it.
05 LX/RT and 06 WK/GCO, (modded similarly) with MDS "ON" Light, Vortex Gens, Debadged, DashHawk, BT Catch Can, SRT CAI W/Add Air Inlet, K&N Filter, Sonnax Trans Line Press Booster, SC Tuner W/Adv Trans Tuning App, DS Tuner, Cust tubular headers w/3 in. catback, Bilsteins, SRT frt/rear bumpers, Eibach SRT Lwr Sprgs & Sways, FRI Sidewinder Cam Adv 2*, 6.1 valvetrain, SLP 25% UD Pulley, BBK 85mm TB, SOS Coils/.060 spark plug gap.