Dont bother - its a complete waste of money.
I spent £5k and got about £1k worth of smiles.
The LSD was a joke unless you were nailing it or on track - every day it was a waste of money and not noticeable.
NA power gains are rubbish and mega expensive and you get used them in about 3 days. Forced induction is fine but kills MPG and insurance (as do other mods).
You still own a car that everyone else thinks is rubbish compared to other hot hatches line the Megane 265 RS which with a £345 remap will trounce even an SC FN2.
If you add that much power you need to uprate the brakes and suspension and a shed load of other stuff so budget for £10k.
If you go down the turbo route with stock internals its even more expensive and will blow the engine in time at 400bhp plus.
You will never be satisfied with it no matter what you do - more always wants more.
So enjoy it stock - its actually quite quick and refined. Dont get bitten by the bug as I did. Buy a Cayman S as I did for less money than a good FN2 with £10k mods.
And then trounce an SC FN2 when you find one as I did cos you will match it for BHP and beat it for torque and gearing and top speed. And it turns more heads and is a proper sports car.