My turn to have a clunk

[entirelyturbo]

It's starting to get bad now. Everytime I take off from a stop pretty quickly (usually around 1700rpm), I hear a clunk which sounds like it's coming from the back of the car. I also heard it today when some genius who wasn't watching what he was doing had to brake quickly and I had to as well, leaving it in gear to keep from locking up. It was much louder then.

I'm already pretty convinced it's a diff mount, not only because it's coming from the back, but I don't know what else it could be. Motor mounts are new about a year ago, liquid-filled OEM. Tranny mount is an almost-new WRX piece, guy said it had maybe 300 miles on it, that was about 6 months ago. So everything in the drivetrain is solid.

Thoughts? Comments?

[BAC5.2]

Diff mount.

Engine/tranny mounts wouldn't clunk like that. If they were bad, you'd feel the vibrations in the car.

I really wanna see one of these liquid filled mounts. I'm running Group N mounts, and I didn't keep my old mounts . What is the liquid inside there?

[entirelyturbo]

It probably doesn't look any different from the outside. In fact, my old ones didn't even look bad. Most people would look at them and say they're fine. But I felt that they were old, and putting the new ones on was a night-and-day difference. They're supposedly filled with a thick gel of some sort. I never tore my old ones apart to find out, family made me throw out all my parts sitting around