Home / Twin Star Cars Products / Twin Star Cars O Scale Products / Twin Star Cars O Scale Detail Parts / PS2 Conversion Bolsters with Coupler Pocket (Resin) PS2 Conversion Bolsters with Coupler Pocket (Resin)$26.00 These parts were designed to convert the Atlas PS2 4427 hoppers. They can be modified to use them on any PS2 hopper. Purchase Information Categories: Twin Star Cars O Scale Detail Parts, Twin Star Cars O Scale Products, Twin Star Cars Products Related products Twin Star Cars O Scale Detail PartsTwin Star Cars O Scale Products Rock Island Heralds Twin Star Cars O Scale Detail PartsTwin Star Cars O Scale Products URECO Hand Brake Twin Star Cars O Scale Detail PartsTwin Star Cars O Scale Products Universal Hand Brake Twin Star Cars O Scale Detail PartsTwin Star Cars O Scale Products Proto48 Spikes (sold out) QTY-168 1/48 scale etched stainless steel spikes.