Need help :/

So I recently had problems with my exhaust got it fixed just to find out that it’s my valve cover casket. I bought the truck used so I would like to replace a lot of the bolts / hardwear since they have some rust and almost every bolt has been some kinda battle. I can’t seem to find the gasket anywhere and I know there is also other gaskets that need to get replaced because I have a little oil on my spark plugs. Sorry for the inconvenience I use this forum for everything but can’t seem to find someone working on a gen 3 doing the gasket hopefully I don’t look to stupid but I need some help please thank you for everything!

 

Are you talking about the spark plug tube seals?

 

Yes could those leak without the other gasket going?