the steering knuckle is the same as escort ones but the steering rack is an all alloy one whick was i believe only on the kadett c's which is the type the works car's used for the quick rack's the don't have a splinned end like the chevette one's which can slip if you hit something with your wheel ,ive had it happen before  on a rally and is not a nice feeling steering the wheel a different angle to the way the car is going  ,you should be able to get a knuckle on ebay there about £25 new