I'm helping a friend replace his superdrive on his 15" aluminum powerbook g4 1.5GHZ. Can I put any model Apple superdrive or combo drive (like one from a titanium powerbook or ibook) or will only specific model superdrive/combo drives work? Finally, are the brackets also interchangeable on the different model superdrives/combo drives? Some sellers on eBay sell them without brackets and I figured I could just take the existing bracket he has on his powerbook and use it on one of the ones he can get on eBay. Thanks.