gearbox rebuild

Hello all, i hope there's someone who knows So i need to source another 7G gearbox... Looking at ebay there are lots of variations very similar to what i need, so my 2 questions are...... would one from a diesel fit my petrol? & what are the slight differences between the part numbers? I've...

Hi all, does anyone know a Merc auto transmission specialist in Yorkshire? Had my C63 at an Indy who thinks the gearbox needs replacing/reconditioning, they don’t do that kind of work so I need some who knows what they are doing