MARK writes:

I HAVE INSTALLED THE FOLLOWING IN MY 1975 ARROW.
GARMIN 430, GARMIN 340, GARMIN 327 TRANS AND GDL FOR WEATHER DATALINK. I
AM REMOVING MY ADF, DME,. AM I THROWING TO MUCH AWAY ON THIS ARROW? IT
HAS 4400 TOTAL TIME

Mark, hit the CAPS LOCK button before typing quite so much. We call it
"shouting", and it should be avoided unless intentional.

Re your query - it depends. I have an Arrow, and would love to have that
panel in my plane. I plan to keep my plane for years, so am not overly
concerned about the investment in my panel. If you were going to sell your
plane next year, you might hold onto the ADF and DME, and put them
back in (with another nav/com) and pull the new stuff out. That way, you
can put the Garmin stuff into another plane.

The Piper Owner Society had an Arrow on the cover a few months ago. A 1972
Arrow, owned by the #2 guy at Autodesk, the makers of AutoCAD. He had done
-everything- to that plane and its panel. It's still not a "new" Piper,
but he has it just the way he wants it. Definitely overkill for most
people, but customizing is a passion for some people. If you are happy
with your upgrades, that's super.

Best of luck!

-Jack
http://world.std.com/~jmac/Arrowprofile.jpg