Well guys I have tried n tried n craned my neck and tried to feel for the stamp to no avail. There's too many cables in the way.
Unfortunately the motor ran out of coolant last week in a catastrophic cloud of steam n white smoke and is prob cooked/seized.
It's going to be removed in the next month so I'll look then.
Thanks for your help.
Phildo - Melbourne Australia
2003 GU Nissan Patrol - Chev 6.5l Optimiser V8 turbo Intercooler diesel - Chev 4L85E Auto - 4.1 diff centre - BFG ATs - towing 2.5 tonne off road Trakmaster caravan