84's are unique in that the cap and coil have a post in center of the hole to grab the wire more securely. You can stay stock and buy this 84 kit or you can convert to the 85 style by purchasing the 1985 tune up kit and also purchase the "61" coil. That coil accepts the newer style spark plug wires. Then the rest of the 1985 kit will work fine.
This Item also appears in:Vanagon Parts Catalog > 1984-1985 Vanagon Manual Transmission > Tune Up
Vanagon Parts Catalog > 1980-1983 Vanagon > Tune Up