Oil fill tube washer question

[Turbo6Smackdown]

Ok, ready for the most obscure question in the history of this board?
I'm trying to locate a factory oil fill tube steel washer, and need to know what one looks like before I buy one, how to identify them because I may have one in my possession already.

Are those cut outs that allow the fill tube to enter the washer, different widths as they are on the valve cover itself, or are they the same widths like the after market washers you see around nowadays? Who here has an absolute bone stock set up that could check for me.

 

[626gn]

You talking about this? http://www.nos4gn.com/servlet/the-614/Buick-Grand-National-Oil/Detail

 

[Turbo6Smackdown]

Yes. That looks new so I'm assuming it's an aftermarket piece from someone like Dorman or someone. My question is, if you look at the valve cover, you'll see the 2 slots in the cover and one is a little bit wider than the other. Did the washer follow suit, or come like the ones in highway stars?

 

[Grumpy]

Did the washer follow suit, or come like the ones in highway stars?

highway stars

 

[Turbo6Smackdown]

I see. Sweet.