Alright....things have changed......I found a direct replacement part from Bosal.

https://www.qcsonline.net/bosalb2b/p...3200.gif?52065

Part numbers are
Passenger Cat: 099-1343
Driver Side Cat: 099-014

I found them for a little over $300 each.

Comparing them to the Isuzu part diagram, they look like a good fit. I purchased the passenger side from fcpgroton.com and the driver side from amazon.

Both places I am confident I can return if their description that it will fit my Vehicross, is wrong. I am also having a custom off-road shop do the installation, so if there are any surprises, I am confident they will be able to tackle them.

The muffler is probably going to change too, to match the 2.25 inlet/outlet.

wish me luck