What is the firing order for ford E-250 4.2 liter engine?

For the Ford 4.2 liter V6 engine in a Ford E-250 :

The firing order is ( 1 - 4 - 2 - 5 - 3 - 6 )

The engine cylinder locations are numbered :

3 - 6

2 - 5

1 - 4

front of vehicle

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Also the 6 COIL PACK towers are numbered :

coil-----3 - 4

pack----2 - 6

plug-----1 - 5