Hi Paul691
firiring order is:
1 - 5 - 3 - 6 - 2 - 4. (no. 1 at the front of engine, nearest when standing in front of the car).
Trust this assists.
Good information but slightly flawed as a cover all post
Timing on the majority of 12V's is from cyl No'1 on TDC compression stroke however some 12V's were timed up on No'6 TDC compression stroke!!!!