Need Help!

I'm looking for a tool kit for my 1977 911S. I have located two kits, however they are from 1975 and 1981 cars. Which kit would be most like the original kit that came with the 77?
The tow hooks appear to be different sizes. The 81 tow hook appears to have a larger diameter shaft. It's really hard to tell from the pictures. Should they be the same? If not which one fits the 77?
Thanks for any help,
Scott Kail