Jason;

Anything that is cool ie turbos, superchargers etc is very expensive, and hence complicated to set up. I have looked into it as i used to want the turbo sound, but the very cheapest to get someone else to do it, is around £2k+ for a turbo. To do it yourself may still run into the £1k+

Its cool because not many people have it. Not many people have it because its so expensive.

Stick with what you have or buy a supra!!