The Ford GT90 was originally to be built with 900 hp and 400 km/h.
Oldsmobil Aerotech - 447 km/h (reached)
SVSi Stryker Viper TT - 397 km/h, maybe you can find other data as well.
Weineck Cobra - who knows?
Also, try other CanAm racers as well, like the Shadow Mk1 AVS.
Mercedes C111 III and IV - 403,878 km/h average reached at Nardo
Spirit of 76 - fastest wheel-driven - 696,331 km/h (reached)
Le Mans, WMP 88 - 405 km/h, Sauber-Mercedes C9 - 400 km/h (reached)
KITT - the highest speed I can remember was 268 mph.
The 950 hp Porsche Carrera GT follow-up is coming at 400 km/h.
Orca SC7 - 400 km/h (est)