nothing... well for anyone who's slightly mechanically inclined, it's gotten louder and sounds as though it's just behind and underneath the e-brake, there's a big O thing where the two half's of the driveshaft bolt up inside it before going on back to the LSD.

Although a friend of mine suggested it could be my ring and pinion in the diff that's worn out on the coasting side which is why it's so loud when there's no load...

It'd be nice if someone could give me an idea of what to look for down there...