There will be gains probably the incrementally best of most mods - but given the OEM package - they are only the start. You will probably want at least a mail tune and a LSD...and then there's cooling....
If you want to go faster its a slippery slope.


If you're worried about the money before you start, maybe consider just enjoying the vehicle for what it is - a very fast OEM. I spent the morning reading about a guy who was modding his Ferrari F40 up from 15 to 38psi...


Or there's always DIY stuff.