Abstract: A body welding station receives a succession of differing body component parts in order to weld such component parts into an integrated body structure of differing styles. A fixture frame has clamping and locating fixtures mounted thereon by disconnectable fixture holding devices which permit the individual and selective removal of certain of the fixtures from the fixture frame and permit the mounting of different fixtures thereon for the subsequent clamping and locating of body components for a body structure of different style. A fixture changing station is located remote from the welding station and has associated fixture storage apparatus storing additional fixtures therein. A transport apparatus moves the fixture frame between the welding station and the fixture changing station.