There's no differences in the pistons as the engines are the same having been pulled from the same assembly plant and production runs as concurrent Troopers, Rodeos and other light/medium trucks using the 6VE1. I've had the opportunity to check not only actual pistons and other components but the engines themselves and they're all the same. It simply isn't good business practice either to set up the scenario you suggest, especially as Isuzu is well known for using what they already have in production. That's also why you can find and cross many of the same parts across all lines of Isuzu light and medium trucks. You'd be surprised how much NPR stuff is in a VX!

As for looking at the baffling, I meant inside the new catch can.