Had this for a few weeks now, sounds like a ty wrap tied to the drive shaft and hitting the floor as you drive along. The rate increases with car speed and not engine rpm and does it in all gears and declutched. I jacked up the front end today and let it run in first and second with the left wheel off but couldn't hear the noise. However the left wheel was rotating much slower than the right side and was stopping and starting in small segments. I could grab the wheel and it stops whilst in gear and under engine power but I think this is normal? However there's a crappy sound coming from between the gearbox output and sounds almost sounds like a set of balded cog teeth rotating (but missing most the time) inside another set of ring teeth. The car drives fine and theres no other abnormal noises. What ya reckon im looking at?