Hey guys so my 69 Lemans has a disc brake front conversion with booster and my master cylinder went bad so I am replacing it and lines at the calipers, and was going to do the booster too. I cannot for the life of me get enough torque to break those nuts free. So I'm thinking I'm going to just clean it up and paint it in the bay. My question is...see pic...wtf is that smaller object circled in yellow? It runs from my front port on the master with that line then down to the proportion block or whatever on the frame rail. Do they make new ones? What does it do?
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