Take the dash apart ...
The order in the distributor will be 18436572 in a counter clockwise rotation. see link
40 lb/ft Cast iron heads.
1972 Plymouth duster strait 6 firing order
18436572 clock wise
1432 on ALL Bugs.
There are 8. The firing order, if thats what you mean, is 1,8,4,3,6,5,7,2.
All V8 engines have the same firing order. 1,3,5,7 is the left bank, 2,4,6,8 is the right bank and the distributor rotates clockwise. 1,8,4,3,6,5,7,2