I'm possibly getting an Early 2008/Late 2007 MacBook Pro. I was wondering if there would be any troubles putting my HDD from my current MacBook Aluminum into it? The HDD has Mavericks on it. The laptop I'm going to supports Mavericks.
There should be no serious problems with transferring the hard drive.
The older MacBook Pro can't have as much RAM installed as you have now in your MacBook.
If I were doing that swap from one Mac to another, different model - I would boot to the Recovery partition, and reinstall Mavericks. That will assure that the various hardware drivers are detected as part of the OS X install, and installed properly (I think of that kind of reinstall as a "re-fit" )
That may not technically be necessary, but it's what I would do.
I'm possibly getting an Early 2008/Late 2007 MacBook Pro. I was wondering if there would be any troubles putting my HDD from my current MacBook Aluminum into it? The HDD has Mavericks on it. The laptop I'm going to supports Mavericks.
The Late 2007 and Early 2008 MacBooks can not run Mavericks. The highest version of OS X they can run is 10.7 Lion.
The hard drive itself should work fine but you will have to install an older version of OS X on it for it to be bootable on the Late 2007/Early 2008 MacBook.