Floor And Firewall Hole Cover Patterns?

The project I picked up has several purposeful (I presume) holes in the floor and firewall; PTO cover, transfer shifter access cover, drains, heater hose, etc. I see through several vendor sites that there are replacement covers for these but I wonder if there are patterns out there that I can trace onto sheet metal and make for myself to save a few dollars to put elsewhere on this money pit? I can sort of figure out what most will look like, but if there is a set of paper patterns, that would help. I did search a bit on this site but might not have used proper filters?

Thanks, all.

 

I'm sure someone out there has them digitally drawn up, and if you have a particular one you want a paper pattern of, I'd be happy to trace one out and mail it to you if possible. I say "if possible" because there were variations, and I'm not 100% sure I have all of the pieces you're looking for.

 

I do remember a fairly detailed firewall drawing here on ECJ5.

 

What year are we dealing with here?
Here is the 66-71 firewall.