Does anyone know what it takes to do a W211 facelift on an early car?

I have an 06 CDI with a cracked front bumper. I was considering getting a sport package or E63 front bumper as those seem to be widely available aftermarket.

An 03-06 E-sport or E55K bumper would be the obvious direct fit, but for whatever reason they are hard to find.

An E63 bumper is a common mod on E55s, does the bumper just bolt on or do you need to change the grill?

Thanks!

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