Which one to use?
I had nice 174 and 175-D beacons in the garage, but neither skirt was long enough to be cut to fit my roof and match the height of the 176. The 174 had a glass dome; the 175, plastic. The 176 has a perfect plastic dome, so I'm keeping it for originality.
Thanks to Gary Cahill at Rescue Market I have two new skirts, three new roof gaskets, and a replacement glass dome for the 175. The original 176 skirt was used as a pattern from which to trim the new ones. The data plates were transferred from their original skirts. The gaskets will be notched as the originals. Fortunately all three originals are in good shape, so I'll keep them for spares.
While I now have a beacon for every mood, the 174 will likely stay on the car: