SUSPENSION
The springs in the two-spring cans can be uprated to as strong a spring as will fit: 3000lb is the max. The front arms should be modified to Belgian spec for safety and reliability, usually best done by a specialist, while the rear arms should be reinforced. Castor and camber are free.
Take care when fitting new wheelbearings – the race cornering loads are much higher than the design loads.
Shock absorbers can be replaced and bump stops can be removed. Shocks to 2CV spec are available from AVO, GAZ and Protech. Get familiar with their readjustment.
The one area where racing 2CVS are noticeably different from road 2CVS is that their suspension has been lowered and stiffened. Spring rates are generally increased significantly; coupled to light weight, this makes the cars very agile. Corner speed is the holy grail.