I was watching that auction also but I didn't bid because of the wifey. I just bought another Cen Matrix TR Arena truggy so I didn't think he would be too happy if I bought another rig. After I rebuild my current TR Arena truggy I may be putting it up for sale just to make the wife happy (I spend way too much money on this hobby).

I think they went to the cross-pin diffs less a year ago. I'd say maybe 8 months but don't quote me on that.

Here are a couple of pictures of my buggy






My Matrix TR Arena