[Rodya234]

a 4.9 Deville with 2.97 gears (Touring Sedan) can run the 0-60 faster then a 270hp '94 Deville Concours, and the 247hp '91 Audi V8.

Still, it's not the fastest car, but it's pretty quick for 200hp. There are such things as performance 4.9s, but they either are very expensive or require alot of custom work.

Look up the ASG 5.0L. It's a modified 4.9 that produces over 290bhp and 320lb-ft of torque (changing the camshaft profile decreases the low end torque). Combine one of those with the external mods you can find on this forum, and you'd have the ulitmate performance Cadillac.