I have a 1996 S320 mercedes with a 722.508 transmission and the parts seem to be hard to come by. Does anyone know if the parts on a 722.5 series are interchangeable 722.3, 722.4, 722.6? Also does anyone know where I can get reasonable parts for the 722.508 transmission? I am looking for a direct clutch drum (possibly K-1 drum,disc support), pistions (reverse speed), return springs & retainer for piston and drum, and a stator for the front pump.

Thanks