Rob's log style headers making power will be tied in with other mods you have. Sure equal length long tubes would be desired if there was only room. Then there's the steering box in the way. As a compromise,I'll be going with Rob's larger diameter log headers that I want have to remove every time I want to change out 12 spark plugs. As you already know,the SRT-6 has 4 cat's. Two under the hood heating up the engine compartment and two under the car. Then the SRT-6 has a factory flattened out down tube on the drivers underside. When changing all this out,it will work nicely with other mods to bring out power. After installing EuroCharged 185 crank pulley, then the rest being NeedsWings mods, headers,down tubes,two high flow cats,custom x-pipe,custom intakes,teflon y-pipe,DCAI,90MM supercharger snout with 90MM Power Plus BBK 90MM,pulley saver kit,then the headers are a must have. Any custom header's power gain from headers will vary with each car's mods. Squirrel Crusher