The other thing you need to think about is how much money are you willing to invest.

Not know what other mods you have done to your car or what chassis it is in, I cant give an idea of how much it will set you back.

You will need to think about fuel system and engine management for any upgrades made to the cylinder head and bottom, along with clutch upgrade, so factor that into your calculations.

If you have any other questions feel free to drop me a pm