Baer is now selling a billet master cylinder with a built in prop valve. The MC is available in three different bore sizes and a couple of different flanges.

The Ford/GM flange fits the two bolt adapters that I make. In the picture I'm using an AR060 offset MC adapter which is a common part that Mancini Racing carries.

If you're looking for a new master cylinder or want to clean up your firewall area with an integrated prop valve then this might be an option for you.