[Dominik]

There are some books from Carrol Smith, Valkenburgh and Steve Smith, but they cover mostly things to do AFTER you bought a chassis.

C Smith goes very much into detail about suspension layout and setup. Once you understood all he says (I didn't!) you can design a chassis accordingly.

What is left open is i.e.: What material, thickness, cross bracing, gusseting. Look at as many chassis as you can, even (or especially) accident damages to get into it.

Road car chassis design follows more layout of components and passenger comfort, rather than race-ability. The result is mostly too heavy a chassis with many compromises.

The 300SL Mercedes and Porsche 908/910/917 were state of the art tubular spaceframes, but unlikely to be FEA tested these days.

A clever suspension layout can compensate for a lot.

You can't go wrong with unequal length double a-arms, front and rear. The longer the control arms are, the better (for less camber change). Once you understood the roll-center issue, you are on the right path. And even that is a bit over-valued.

Get the books and read. It's winter...

Dom