Hey Ladies and Gentlemen of the internet. I was wondering if its possible to buy the "GUT'S" from a newer PBG4 15" and put them in place of my 15" Tibook 400MHZ? Say like a jump from 400MHz -1.33Ghz. I bought the PB from kijiji for like 150$. Also are the HDD's hard to change 10gb is smaller than my thumbdrive on my keychain haha. Or is it not worth my time.