After I replaced my clutch/flywheel last weekend I noticed that one of my rear cross member bolts had been replaced  with a non-OEM one. I assume it happened when I had my car at a shop that installed my MMIs along with my header years ago. I did the washer mod and I have both bolts tightened up, but I want to put an OEM bolt back in it because of the wider part which prevents the member from moving horizontally.
Does anyone know what the part number is and whether you can buy the bolts separately?