hi mate, i've got an induction kit and full cat back exhaust on my 24 and its upped the power from 168bhp to 183bhp, you dont really notice much difference to be honest.

if you've got 7k to throw at it then look at the Vortex supercharger kit from the USA, its about $3000 buts its a hefty up in power.

the V6 engine is already tuned so you wont get much power from it without alot of cash.