Our 93 25' Barth needed a needed brake master cyl.
Once I found it behind the front tire under a panel fastened with 7 bolts It was a easy replacement. The GM part was obsolete so I opted for the top shelf new Napa unit. Next time that panel comes off it's getting blasted and powder coated.

Where is it

found it

she's off

back on and together

Thanks Napa