My buddy has a stock V6 and a few days ago, an odd squeak started coming from the rear of his pony at idle. It's a high pitch squeak that seems to repeat on a revolution. As if it is a piece that is spinning. He said it doesn't do it in motion, only when in neutral or engaged clutch at low speeds, but mostly at idle in no motion. I thought it off because he hasn't changed anything and its only a couple months old. Any ideas, or maybe just a bad factory part fell through the cracks...?