That's grand, but I was commenting on you don't need an LS7 427 ci with twin turbos to make 1000 rwhp.
Also the 4.6 will not be able to make 1000 rear wheel hp on an untouched 4.6L. It will need intake work, race heads and cams. I am talking your average LS2 engine with a turbo and some bolt ons without spraying.