Hello from a 2009 MacBook!
So here's a small sum up of my day... I got the heat sink, and it was the correct one. I quickly went to put it into the macbook, and upon screwing it in, i realized that it wont screw in. Sure enough, i look at the holes, and they don't line up to the holes in the case... So i made a very stupid and embarrassing move to keep the heat sink in place. I quickly regretted it, and decided it was better for me to just swap everything into a new bottom pan than to risk damage to the board. So I set out to make a record time in completely tearing down and rebuilding a MacBook, and i did it all in about an hour. I went to finally turn it on and i was greeted with a ? folder. I tried to boot off a disk to see if something was wrong with the HDD. I was then greeted with a padlock upon pressing the Option key. So i opened the computer back up, swapped out the HDD cable since i had a spare, and still nothing. I then took the HDD out and attached it to my MBP, which it worked fine on. I stuck the HDD back in and finally did a PRAM reset and it finally booted up fine.
So... In regards to the video, i discarded any footage from today's reassembly because of all the issues i was having. It was pretty self explanatory at the point that i left the video at anyway... I'll record the results of updating it to Yosemite or El Cap (still haven't decided...) and then edit the video, and finally upload it.
Overall, I'm very happy I did this, this GeForce is so much better than the GMA. It still seems to be heating up a lot when I watch HD videos, and for some reason as I'm typing this the fans are audible, but not at full blast.
I guess it would only be fitting of me to change the title to "My Upcoming (Now Completed!) MacBook Project!".