Dumb Turbo question...but i am new to 911's

Well a 911 has been my dream car since i remember..I was wondering on information about turbo charging a '83 Carrera Targa...I think its a 3.0...I havent bought it yet...Anyways I am dissapointed that it only runs 180 Horsepower. I was wondering if it is easy to turbo charge the car? how much does it cost? Is it safe for a freshly rebuilt engine? How much would it boost my Horsepower? And what else do i need to know.
Or is it better to supercharge etc.

Thanks,
Rafal




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85.5 Porsche 944