I saw this mod years ago and finally did it! Removed the individual plastic reservoirs and installed the Groves last week. These hold 1.1 ounce of fluid and the install was simple. Ordered them from Aircraft Spruce for $38 each.i removed the individual parking brake valves( which I never use) and eventually installing a cable actuated parking brake valve on the panel.
I've put the Grove reservoirs on several of my Carbon Cub demo airplanes. I like them a lot!! Only downside is having to check the fluid level with a pipe cleaner, but still a good mod.
Chip Allen
SWT Aviation, Inc.
Cubcrafters Southeast Sales Center
Marietta, GA