Also, the 'turn' or where it 'is' for towing has to do with where the
sound waves go...
When I see a setup with the after market exhaust pointing straight back...
know they are getting exhaust noise bounced off the front of their
trailer to bounce onto the rear of their TV...
Why lots of TV's has exhaust routed to the rear sides...and poke PAST
any body sheetmetal by at least 2"...as if less...the sound waves will
be 'caught' and drummed into the vehicle's passenger compartment
But....most folks today who own pickups and SUVs do NOT tow, or they
use their trucks more as a car than a TV, so really makes no matter
where for those folks