So for a while I had been feeling something that I couldn't quite describe, It felt like it was coming from the front left of the car usually would start too feel it at around 30-35mph an it would stop anywhere between 40-55mph. I first thought it was something to do with wheels/ suspension so I went ahead an replaced the ball joints, tie rods, sway bar links as well as bought 4 brand new tires an had them balanced with a 4 wheel alignment. This didn't solve the problem, someone had told me too try replacing wheel bearing an hub assembly, so I decided to do a little research but everything I was reading about hub an bearing was mainly grinding noises, I didn't really see any feeling type symptoms. I ordered the bearings they just arrived today, however new information arose when I thought there may be something wrong with my transmission because I started to notice a clunking noise when I'd switch from reverse to drive an begin accelerating but this is the only symptom I've experienced so far an my transmission shifts fine its not rough or doesn't slip. So I began too research about transmission problems an after I gathered up some information I found out that it could possibly be my tourqe converter an not my transmission. I read on a page that a failing tourqe converter will make a clunking noise when leaving R, which I noticed mine does. I also found that it will cause a shudder type feeling along with heavy vibration. Out of all the feeling symptoms I've read about the shudder one is the best that describes what I was feeling before I noticed the clunking an was gonna replace the wheel bearing. Ater doing research for a few weeks the tourqe converter is now what I believe the problem is because the bearing symptoms were mainly a grinding sound, which I never heard a grinding sound. I don't wanna just keep wasting money on parts I don't need, by no means am I a mechanic the biggest thing i've ever done was change brake pads/rotors. So what i'm asking is does the information add up too it being a torque converter? Or has anyone experienced something similar? Sorry If there's not enough Information this is about all the time I have to post something so if you need more just comment an i'll add when I can. By the way I have the GT 3.8L V6 2007 with 149k miles. Also i'm having trouble even finding a tourqe converter, everywhere I've looked say "out of stock notify when available" So If someone could point me in the direction of where I might find one i'd really appreciate it.