Narco 891 VOR/LOC/GS with built in DME and marker lights.
Come with a cable adapter to connect to a Garmin GNS 430 but imagine it will work with other Nav devices. Made by Mandelson's.
When used with the 430 can be switched between Nav or GPS which is great.
The built in DME is ideal when on an Approach and saves a lot of panel space