you want LOUD and FAST. well, it's not a car but should satisfy both of those criteria.
the 'shockwave' jet-truck
powered by 3 Pratt & Whitney J34-48 engines used in U.S. Navy's T2A Buckeye
36,000 horsepower
19,000 pounds static thrust
0-300mph in 11 secs
top speed 376mph (605kph)
Nearly 4 times the power to weight ratio of the F-14 Tomcat