That's true. Lifespan/durability/reliability will be critical.
[ Giving its extreme capabilities for a production car it can (probably) kill you, literally, before the engine fails. ]
However what bugs me, is how they got 700 HP at just 10200 rpms from a 3.5 spec.
Usually at 10k to 11k, the 3.5 spec V8s delivered 600 to 650 hp. The 700 to 750 hp barrier meant rpms of over 14k.
I suspect they used some V10 era technologies, now banned on the 2.4 V8 spec., and previously not available on the 3.5 spec.