1000 HP for a few seconds isn't as difficult as getting 1000 HP day after day, for more than 250,000kms. This engine will be powerful, but it'll also be like a hand grenade.
Ricardo Engineering did the development work on the Veyron, and the gearbox can handle the equivalent of 80,000kms at 80% engine torque and still come out fresh as a daisy. This on the other hand, will spit its guts out after 20,000 kms of hard driving.
And it's said, it costs €5,000,000 to Bugatti to make each Veyron. Money talks bro'!
Still, good luck with the build! Can't wait to see what figures it churns out!