Quote Originally Posted by stngh8r View Post
...You sayin there may be some potential increase in HP/TQ by swaaping to a 07+?
There is potential, but it is going to be minimal. I would rather spend my time and money on a FAST setup...

Quote Originally Posted by PitchBlackC3 View Post
Will the 99-03 return style fuel rail fit on the 07+ 5.3L intake?
I wouldn't think so. I am not sure if anyone has tried to do that type of swap, but it may be possible.