Got a list of God mods at all?
I have an 09 4.8 and it is thirsty with power to burn. Def check all the history, even more so if a fleet vehicle. Mine blew up at 75000 and was a fleet vehicle, turned out the log book was dodgy and after Nissan and I did research into it, found out the Govt Dept only serviced it twice in 75000.