The Main Idea
The original part was anything but a simple extrusion. It consisted of the top section, 2 side sections, and 2 corner blocks which are all bonded together to make up the primary seal for the windscreen.
Initially, I offered only a replacement strip for the top section as I noticed it was the first failure point. You could cut the original seal at the corner blocks and glue the new strip in between them, then glue on a separate clip to make it fit snugly on the metal. It took some skill to install but was a reasonable alternative to a very expensive part.

Closeup of the early cut and glue repair seal.
For a few years this was the only option. I decided to take it to the next level and make the corner blocks and molded sides. This iteration was called the 3 Piece Main Targa Seal. I started making these by bonding each piece together after cutting to size by hand. It was a labor-intensive process but it allowed me to provide a complete seal at less than $200 per seal. The bonding process I was using at that time was adequate, but not as pretty as the factory part.

Recently, I had a customer tell me he spent all day trying install this seal by pulling the side pieces down the tracks. This will not work and highlights how difficult this seal can be to install if you don’t know what to do. Click on the video below to watch Matt explain how to install the seal using his Bahia Red 1972 914.