Induction kit - no, waste of money will possibley make less power due to taking in hot air
Cams - expensive, only really benefit if you've got a ported head, 4 branch manifold and it will drink ALOT more fuel, not a huge power increase
Get decent coilies, brakes and tyres so you can drive it harder, drill the airbox on the driver inner wing side if you want the noise.
If all else fails, clean the throttle body