OK, trying to replace this assembly. Both because the bearing in the pulley is spent and the tension relief molded bolt head is failing. I am having the hardest time finding one for sale. After a wrong part sent to me from Amazon (who made me specify I have the GT), the only place I have found that can get me one is the GM dealer. They want $250 for it! That is crazy. I have searched here with little result....just need the right part link or place to buy it. Thanks in advance.