I'm pretty confident that's a VP free (I see I'm not alone). The linkage looks like that because the shock is way too short. These were an interesting frame (and fuck I wanted one!) that SC plugged as a pedal to the top then bomb down. After it was discontinued they had a similar shaped dh race frame (I can't remember the name of) that people thought was a new version of this. There is a slightly funny video on you tube of a sc big wig telling those people they are wrong.