[HMAN2007TUNDRA]

Looking to do the same with my 07 5.7L. How is the sound at Hwy speeds? I am a little worried about a low drone that some trucks have. My local dealer has Wed night parts specials so I can get the TRD system for less than $600. Any gotchas with the install - did the parts come with instructions? Also does the system go all the way up to the headers, I assume it is just upstream of the muffler. Assume you noticed no performance difference