You can search the achives and find the answer. With the engine on #1 TDC, the rotor should point in the direction of cylinder 1. Otherwise, the vacuum advance canister will limit your adjustment on the timing and the wires may not reach.
18436572 should be the firing order.
You might have to twiddle the oil pump shaft to get the tang to line up with the end of the distributor. Also, as you set the distributor in place, it will want to rotate as the helical gears mesh. As a result, you have to lead on it a tad so that rotor points toward #1 as it seats on the oil pump.