The Garmin GNS 430 is possibly the most popular panel mount GPS ever developed.
The 400 series first began shipping in 1997. WAAS capability was added in 2006.
There are three GPS models in the Garmin 400 series:

GPS 400 - GPS only
GNC 420 - GPS plus COM Radio
GNS 430 - GPS plus NAV/COM Radios

Explore the functions of the GNS 430 by clicking in
the image shown above.

Click "Master Yours" in the title at the top to learn more about the Garmin 400 series GPS.