I have a Macbook Pro 17"- silver version. I am not sure if this is the Santa Rosa or the Penyren, nor do I know how to really check....anyone? Beyond that, I want to upgrade the HD. Will the Scorpio Blue 1tb or 750 gb fit in this model or only the unibody? thanks. p.s. if there are any other big ones like 1tb besides the scorpio blue that do fit, please advise.