 The rear hatchback portion of an AMC Spirit (or rather VAM Rally) was cut from the Spirit body grafted onto the longer wheelbase AMC Concord (VAM American) in two and four door versions.This idea was presented to AMC, but the labor cost to produce the car using the "cut and weld" method would have been cost prohibitive in the U.S., and sales of the aging Concord/Spirit (in production since 1970) were not up to adding a new body that would require unique panels to be pressed.All VAM engines were of AMC design, but built in Mexico.