Could i,and how much would it cost me to slap a turbo on MY99 Sport??????????????????????/

 

I reckon you'd be better off selling it and getting a proper turbo model in mho!

Unless you plan on keeping it a secret from your insurance company, but that could be risky!

On the other hand if you've already uprated most things you could pick up a second hand turbo for a few hundred quid!
Not sure about the risks or what ever though!