Is there anythign I should keep in mind when replacing my O-ring? I am going to label my spark plug wires, but is there anything I should mark on the distributor cap itself?

Thanks in advance.

Make sure before you remove the distributor, look at the back of it. There are a couple of marks there embossed into the distributor and block/cylinder head. Mark a spot in both places so when you reinstall the distributor, you don't have to fool with the timing.
BTW, do you have a part number for that o-ring?? I have been checking other forums but no luck. I know someone posted it on one of these boards but can't find it.

Thanks

I do not have a part number.