Yep, my Brisbane built July 76 HX 308 Monaro had a 700000 engine number with a cast date of March 76. It was another cocked up plate stamping by Acacia Ridge as the vin had a T for 308 but the body plate was stamped L32 for a 253. I ended up on selling it as everyone I spoke to at the time said it de-valued the car as it would be assumed it had been messed with as in a body swap etc.