Abstract: A vehicle seat assembly having adaptability for use as both a side facing seat positioned along the side walls of various model vehicles and as a front facing seat along the rear wall of various model vehicles. The assembly has a plurality of seat modules, the combination being any mix of the single occupant or double occupant variety. Each of the seat modules has a shell-like structure with a back portion and a seat portion, both of which have a concave outer contour configured to receive a human body. Side flanges are integrally formed along the edges of the seat and back portions. A plurality of end arm members are provided and each has a panel section and inwardly extending flanges for supportably contacting the side flanges of the seat module. The arm member flanges have a back portion support flange and a seat portion support flange. Interlocking structure is formed on the rear of the end arm members for engaging interlocking structure on the front of seat mounting adaptor members.