Maybe 6 is enough ?

Saw another kit with an aluminum top affixed to Bakelite box:

Mentioned this style of kit enclosure at least 5 times before:

https://wb9kzy.blogspot.com/2024/03/another-still-currently-available-ham.html

Here is a very thorough video by Jeff Tranter on the IN-12:

source: https://www.youtube.com/watch?v=cI8cSniJj6E

I suspect that a lot of these resistor substitution boxes got built, tried and then put away somewhere.

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm