The nsr brake caliper on my car is seized...as was the replacement. These are difficult to come by, none being available in the UK from MB. My car uses ATE calipers at the rear though mostly these cars and the w220 S Class use Brembo. My question is, can I use different, more available, calipers? If so...which ones? Does anyone have the caliper I need, part no. 0024206783? TIA.