G'day, I've been getting the occasional clunk or thump from the back end of the car when I let off the accelerator. It's most noticeable in stop start traffic or when you let up from giving it a boot full. From what I've read on this excellent forum I came to suspect it was something to do with a split diff bushing so I had a peak under the car and sure enough it looks like a split bushing (attached photo). Any ideas how much that might cost to fix and is it worth staying with the OEM bushing given that I don't really drive it too hard most of the time and it's a stock auto or should I look at something aftermarket? Any advice would be greatly appreciated. Cheers, Joe