Need More Horsepower?

[JIBBBY]

I have got my 1992 sc400 running close to 500HP this is what I have done and does anyone out their know what else I can do besides supercharging and turbocharging ?

Intake rod millen

2 1/2 exhaust high flow mufflers (headers don't fit on CA. emission car)

Dragon torque converter

ECU upgrade

Nos (150hp)

turbanator incerts

high volume fuel pump larger injectors

18" rims

lowered 1" springs and shocks Tein

Supra LSD

I would love to keep up with some of the faster cars without hitting the nos every time, without the nos I can beat camaro's and mustangs and that is about it, with nos I hang with AMG's, M6, Corvette's. SOMEBODY HAVE ANY IDEAS ON WHERE I CAN MODIFY FURTHER MY 4.0L SC ENGINE.