Hello,
I own a Marcos Mantula and I'm in the middle of a complete rebuild. The suspension in its unmodified state is notorious for horrendous bump steer. I'm very keen to design that out.

Right now I have the bare chassis ready for a few modifications including conversion from solid rear axle to IRS.

Given an anything goes approach what would be the best way to ensure I modify the car so that the suspension works as well as is possible with only minor adjustments? Also to do this without changing the car's stance. (The Marcos factory anti-bump steer raises the front of the car and looks wrong).

I have access to 3D CAD, but really need to know what I'm aiming for before I startthe design of new suspension components.

Thanks for any guidance
Ian