Panels rivets

[cherno]

I've build my haynes 4 year ago and I still make modification on.
My car is only used on track I try to have the a better car each time.
I want to share you experience about adding rivets on the side panel to enforce the chassis/frame rigidity.
I consider to add a lot of rivets even the aesthetic is not preserved.

Do you have commandations or experience to share on this subject ,

Thanks