Yes, you will need a custom deiveshaft, along with many other parts, ie; motor mounts, trans mounts, etc.
Please start reading in the RB forum, you will learn alot, plus you may not get flamed so bad for asking questions that are answered here on a daily bases....
Start with this thread>> http://forums.hybridz.org/showthread.php?t=111526
Then this one>> http://forums.hybridz.org/showthread.php?t=77962