I've just recently picked up a very strange tapping noise when i'm in a forward gear, generally appears in the torque band in each gear. with my window down it sounds like it's coming from just behind me, d-line, exhaust/exhaust heat guards, so on... it doesn't sound very internal though; more of an external tapping. though with the tapping showing up only when going forward, it makes me think it's mechanical... but i cannot pin-point it for the life of me... any ideas?

on a side note, not sure if this would be related... the oil pressure at idle has dropped in the last day or two... though i'm almost positive the sound isn't coming from the engine.

-Jason