long or short for a deep tone??

[H8Eternal]

What would be better for a deeper tone on a dual exhaust setup with some flows, long tube headers or shortys??

 

[Jarrell]

Longtubes with cats.

 

[94 3.8l stang]

my shorty's with 18 inch glass packs sound pretty deep. 2.25 in true duals and all four stock cats.