My frame is showing its age but after a couple of hours of cleaning & polishing, although it still has a patina, its ready to be reassembled. The posts were not in as good of shape. One post had the chrome pealing so I had both of them re-chromed. New sundry pieces and rubber bits for the frame were purchased from Clarke Spares, who specializes in all the hard to find bits and pieces for MGAs. New triplex XXX glass was purchased and the assembly began.
I followed the method laid out by the MGA Guru : Roadster Windshield Installation
The process is a struggle, but doable.
It is no surprise that the Auster and Triplex names appear together on the windshield. With a little digging I I found that they were part of the same company. Auster / Triplex