99wagon

I have the same issue with the knocking. I was curious if anyone had experience with using these inserts whiteline KDT 910 I am sure they aren't an exact fit but if they are close it seems like they could be modified to fit. And may be an easy solution to this issue. http://www.ebay.com/itm/KDT903-Whiteline-Diff-Mount-Insert-Kit-08-WRX-STI-/330605121067#ht_1922wt_818