Nope, came off 6.0L LQ4, (personally removed it myself and installed that 6.0L into my BMW M3), not interchangeable with the big block, intake ports are Gen III cathedral LSx.
Closest thing I have found is the FAST truck intake, styling and the removable floor are "very" similar though the FAST intakes I found are all 4 bolt Throttle body, this has the 3 bolt Throttle Body.