I have a 99 GP GT w/130,000 miles. Recently i have noticed a bad vibration when i hit about 40mph and up, so i jacked the car up and noticed a 6'' area of wires showing through the tire on the passenger on the inside. It also got me to thinking that the wires broke and that's half the problem. I was reading somewhere on the forum to take it to a shop and get a free suspension check so i did, They called me over a showed me that the sway bar ends were in bad shape (not the end links). My question is would a faulty sway bar cause the car to vibrate that bad, I noticed when on the freeway if there was a slight turn to the left or right it would stop vibrating. Any input would be great, I'm also looking to do some suspension upgrades.