Is there any place where one could get the 3 percussion parts for this piece seperate from the score, as in a package of 3 individual parts?

Your best bet is to just photocopy, cut and paste the parts onto separate sheets and re-photocopy. A buddy of mine took the time to write out all the parts in finale at one point, but he swears he will never give them out because they took him so long 🙂

-Evan