It'd been recommended to me that I change out all my vac lines, but that seems hard to do since they squirrel all over the place and sometimes you lose sight of where they go, or they go to places that I can't get to.

Has anyone done this, and if so, how hard is it? And where can I get vac lines? Seems that I called a MB parts supplier and they were really expensive. I generally stick with all MB parts, but the vac lines have a pretty easy job, I'm thinking generic stuff would work just as well.

1991 300d, 199k