Just got these in the mail today, might throw them in tomorrow. Transmission crossmember bushings, and rear diff crossmember bushings. I already have the 2 rear diff stabilizer bushings in, group-n tranny mount, and all the shifter bushings upgraded. Guess I'm getting addicted to polyurethane!
If I remember correctly the rear diff crossmember is for the BIG T that the rear diff is bolted onto. The BUSHINGS at the very back end (two of them) of the diff could use some better bushings or a brace. I have the rear subframe LOCK BOLTS on hand, not installed yet. This is so handling is better with a firmer rear subframe. Lateral movement will BE GONE. I have the STi Grp N tranny mount too, but not installed yet. I have the WL steering rack bushings and they feel great. Solid feel is nice.
Yea those kartboy ones are for the T part towards the middle of the car... I already installed the back diff ones when I swapped in my VLSD a few days ago.
Here's my latest polyurethane addition... http://www.sti346.com/2006/12/rallyarmor-polyurethane-ur-limited.html