Muffler
Hi scott.
I'm bit confused as how/why a muffler shop wouldn't "find" a single muffler to fit into your VX along with the pipes.
Beside the OEM muffler actually ANY muffler within a reasonable size can be added to the VX.
The OEM muffler brand new goes from $300 up from a dealer & i bid you aren't willing to put that amount for a regular muffler.
Off course the size of a muffler & the diameter of the pipes will increase/decrease the VX performance once installed & alter the torque either in low or high RPM's but you can definetly find a muffler that comes very close to the OEM muffler's specs.
Because you aren't into big mods or no mods at all it's much easier for you to have that job done instead of wondering which high performance muffler to go with.
You can call merlin @ st charles isuzu & ask for some advise as which kind of aftermarket muffler you can go with and/or wait for fellow members to help you out though looking thru the many options you can choose from.
Dakar was just the begining.