You're totally normal for wanting to replace 30+ year old brittle vacuum lines that, if accidentally broken due to removing and replacing a vacuum tube, can ruin your car's ability to brake, shift and about a dozen other things. These cars are so vacuum-dependent that it would be crazy not to replace these old parts.

That being said, there is probably a thread on this board that discusses exactly how many meters of vacuum tubing you need, what colors of tubing you need (to match the original vacuum tube colors from MB), where you can get them, and exactly how many and of what type/shape rubber vac tube connectors you need as well.

Have fun doing your vacuum tube replacement. All the seniors on this site have all done it to our cars and we all benefit ted from not having to resort to weird tricks like applying propane to where we think there is a vacuum leak to see if there's a surge in throttle.

Yeah. That's real safe to do in a running car

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