Hi,

Ford Motor Sport recommandation Sierra Sapphire Cosworth grN Tarmac, was (in 1990, long long way)

Front
TOE in : 2 mm.
Camber : 2° negative
Castor : 4°

Rear
TOE in : 2 mm.
Camber : 1° negative

I think it is very similar of stock vehicle.

Regards.
Claude