I remember someone asking about this in another post. That part usually breaks due to overtightening/stress. I can't remember what the final decision was but most were suggesting to go to a junkyard.
I'll try to find the post and edit this if I do. Not likely since the GP forums search is pretty spotty.
http://www.grandprixforums.net/found...unt-32026.html
http://www.grandprixforums.net/cracked-upper-motor-mount-bracket-32719.html
http://www.grandprixforums.net/broke...unt-54425.html
I couldn't find the one I was looking for, but found these equally relevant topics.
