Hi there!
Careful with the front brake disc sizes. I have been trawling the net to try to source alternatives for my C43, as the OEMs are so expensive.
The alternatives advertised on eBay etc all seem to be 316mm x 28mm.
However, all the guidance on the net says the OEMs are 334mm x 32mm x 48mm.
The closest confirmed alternative I can find is the C320K discs, which are 330 x 28 – they are thinner, but people have confirmed fitting these with no probs on the web (and posted photos).
I came very close to taking a chance on E430 discs. They are sold in 2 sizes, one of which is 330mm x 32 mm x 47mm (and available on eBay for way less than OEM). But couldn't find anyone who'd tried them.
I asked Inchcape to compare the OEM vs E430 discs for me but they declined, so I bottled it and bough the OEMs (on back order from Germany for last 3 weeks).
Good luck!