Turbo went out and I have found a Turbo from Cummins Part #4309191 for my,2009 Sport coach elite with a Cummins 8.3 isc. Engine # 73068991 I got a quot for $3900 total shipping and core charge. ...
Did your turbo grenade? If not and it can be rebuilt you might try a place like Turbonetics or Industrial Injection and see if they can rebuild. Typically significantly cheaper than a replacement. However I have not tried either one of them for turbo off an 8.3 only 5.9's Probably worth a call.