I'm going to put this out there I've had a set of mid length headers and the only difference there was was in the sound of the truck. It really mellowed out the sound and that was it. Besides the fact that they would not stay sealed and leaked constantly. Stage 8 came out with the locking header bolts after i took the damn things off. If i ever take the time to try headers again it will bea set of full length headers no doubt.
End Rant