its not 123456 does some one know what it is??

all 2.8's firing order is 1-2-3-4-5-6 distributor turns clockwise, besure that the timing marks are lined up right and the reset the distributor, then put the number one on the cap where it needs to be ( don't have my book in front of me to tell where it goes) then follow #1 going clockwise on the cap with the other wires

the #1 place on the distriboter cap just happens to be the closest position to the # 1 cylinder.

Looking at it from the front of the truck bottom left