There are a few of the kits for the Ann Arbor single sheathed box and automobile cars left from Cocoa Beach. Links as follows:

• K110.1 – Ann Arbor 41000-series Single Sheathed Automobile Cars
• K110.2 – Ann Arbor 74000-series Single Sheathed Box Cars

There are also some of the P118 – Pressure Head Cylinder and Integral Lever Bracket. In addition to the cars listed in the instructions, I have found a few more uses for these parts, most notably many PRR cars that had KD brakes with the integral slack adjuster lever bracket, including the FM, GS, G22, X23, X24, X25, X28, X29. Most of these cars retained this arrangement when equipped with AB brakes, meaning that the AB schedule reservoirs and AB valve were added, but the cylinder from the KD brakes was retained. Enjoy!