SNOBs do exist, but they didn't have that walk-through. That is an old pre-94 Sport. It is not the same hull as the famed 210 SS/SAN (i.e,. not the same hull as Michael's 95 Sport). The boat in the picture might also have wood stringers. Check the motor mounts for play.
Note, you can send the HID to Correct Craft and they will give you the original write-up on the boat, telling you make, model, year, original options, etc.