Seat belt Counter Plate or Belt Anchor Plate FIA - 65mm - GE50BS or both.
Seat Belt Square Back Plate 65 x 65 x 3mm with welded nut, locator hole & rounded corners as per FIA spec and suitable for MSNZ, if used by itself it must be welded in, otherwise you'll require use of the GE50CBS counter plate to be used on opposite side of panel in conjunction. Stock my vary from time to time from that pictured.