so on the gm or chevy web page it has listed for the 2500 burbans and yukons that the only motor is now a new 6.0L with 352hp and 383lbtq where as in the years before you could get the 8.1.

I was just wondering if any of you know anything about this new motor and if the aftermarket will be making parts for it like the did the last motors in terms of a supercharger, headers computers, etc... Or do you think with the new bump in power that Gm has pretty much tapped out the performance.

 

Yup, they dropped the 8.1 option.
There will still be aftermarket parts for it, just like everything else.