Alright, I hate to keep bringing this thread back, but the problem is still not fixed. Yesterday Jacob (URLOSN) took a look at it for me (thanks again!), and this is his theory... I'm just curious if anyone else had experienced this.

He thinks it might be a bad lower motor mount... which puts an entirely new perspective on this problem, but it makes the most sense. My issue is that my car makes a low creaking noise when only turning right. Further, when I give it about half throttle from a stop, I feel a vibration up to about 20mph.

Anyone else have any input on this, or have had a bad lower motor mount in the past?