The Dodge SRT-4 with the most power was dyno'd at 426 Wheel HP. It's an 11 second car with the following mods: AGP 50 trim, S1,SAFC-II, 750 cc inj.,AIS FMIC, JMB 3" CAI, 3" turboback, greddy profec ebc, ported manifold, LFS TB, JMB return line fuel system. I still find it insane that these little turbo cars are getting 400+ hourse with no NOS.
Some of 20 SRT-4's that showed up:

A 500HP Ford Mustang Cobra with a 100hp shot of NOS:

A 640HP 1997 Toyota Supra running 20PSI:

A shot from inside my car on the drive home watching two race:
