I am going to be replacing all four rubber brake hoses on my '89 300CE.

I am going with the ATE hoses. Are they equivalent to OEM spec? Anything to watch out for when replacing?

Also, I found that there is a rear axle brake hose. Where does that hose run through and should it be replaced at the same time? I couldn't find much information about it.

Lastly, I am replacing my muffler. How many rubber hanger mounts and donuts will I need?

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1989 300CE