Hy CORPO, I read your question yesturday, and I didn't understand your descriptive terms for the parts you were asking about, I thought that maybe someone who used the terms "dished grease caps" and "top hat assembly" would come along and understand what you were asking about. Perhaps if you were to find an exploded diagram of the rear axle in question, and use the terms referenced in that diagram, we may be able to answer your questions, hope that helps.
