I emailed corsa abouta catback for the 8100 suburban in a 2500 series...

The reply i got back was:
"However it is unfortunate that CORSA Performance does not at this time offer a product that would be of use for the 2500 Suburban.

By our patented RSC design, all systems produced are specific to the application by way of extensive development, unfortunately we have not had the opportunity to pursue the 8.1L in this chassis.

Now i know i have seen denalies on here and some tahoes with corsa exhaust, and Whippled has one a extra cab short bed truck...

So could i not order one for say a crew cab truck or a 6.0L denali XL. or is there a "exhaust pipe size" difference in them?