need new panel pieces/material

I have a 3 piece panel in my 9A and Im beginning my new panel planning.
Does anyone know of a company that produces ready-made panels already cut into 3? pilot, center, pass.
I think I recalled the previous owner called it an EZ panel or something similar.

I was thinking I would just purchase a panel blank from Vans and cut but I thought maybe someone knew of something better.

Thanks for the advice!

Why not google this and go buy what you need? These places many times have cut offs of 6061 T-6 .063 or .090 that work just fine? There is not always a need to buy a full sheet.

https://www.google.com/search?client=safari&rls=en&q=metal+retailer+austin+tx&ie=UTF-8&oe=UTF-8 In Austin