Bellows Dimensions

[emenn]

Hello guys
I decided to make bellows (4x5 and 8x10) for some famous brands such as chimonix, Toyo, Linhof, Sinar, Arca-Swiss, etc .
The problem is that I don't have the front and rear openings dimensions. Here is the image of the bellow that I made. Could anyone possibly help me with the dimensions of some other famous brands?
Do the bellow dimensions differ from model to model, like Chimonix 45N-2 and 45H-1?

Thank you!