Hello everyone. Just purchased a 91 Mits U42. Looking to replace the tranny rear mounts. The rubber is looking bad and sagging. I saw a part number from auto zone on here that is just the rubber bushing. Has anyone replaced theirs with this and could give me some info. #2172. This part has a piece of all thread through the center that would need removed. My real concern, is the hole through the center of original mount or is it offset. Thanks Joe