Where's the noise coming from
Dood, I had the same problem with my car (EB, if the name didn;t give it away)
Sounded like there was a moan from the back when you started her up and was a bit slugish off the mark, and a clunk when put it into reverse. Trouble was, I thought it'd go away, mabey just needed to blow it out a bit. N e way, The noise started to get louder and louder, I then noticed that it wasn't coming from the back n e more, but under the bonnet, turned out I had busted a ball barring in the Fan belt tentioner. The sound was soft to begin wuith and wasn't loud enough to hear it at the front until it travelled past me, louder it got, more to the front it got.
Hope that could help elliminate something