If you're worried about getting any drone, I'd go with the cat-back...it has better noise control. Might not be too bad w/ just the shorties, but I'm getting some drone on the highway (I'm sure it's a result of the LT headers/hiflow cats).

Thanks Power',
That is just the info i was looking for.I think i will get some D.Thorly Shorties,as i also have a Noweeds Exhaust cutout coming and a Solo Axle Back.

yes...nice noticeable gains. No final dyno yet, waiting to get the tune finished up. I already had a Vararam & tune in the car before, but the headers definitely added some more power.

I had stock exhaust on before, installed the headers w/ axle-back at the same time. Headers will make it a lot louder then just the axle-back.

Hey Powerfreak,
'likely to be any decent power gains with that combination?
Certainly is a good sound gain!
And do the Headers alter the sound from the Axle Backs as opposed to Axle Backs alone.