1,3,5,7 are on the drivers side and 2,4,6,8 are on the passenger side. (from the diagram that I have)
If you look at the engine from the side, you will see that one head is positioned behind the other. This allows for the offset of the rods on the crank throws. Cylinder #1 will be the front rod position on the crankshaft and therefore the cylinder closest to the front of the vehicle......
JD