If you only get 1175hp with 2 carbs I would fire my engine builder!
I have a very similar motor. I went 5 stage dry sump, vacuum pump, ti intake valves (are a must), jesel belt drive, but only have 1 carb that flows 1600+.
Running Q16 fuel I am over 1200hp @ 7,400.
http://s163.photobucket.com/albums/t...t=DSCF6302.flv