Will this bolt directly into my 200 without modification?

Yes. This condenser is engineered to factory specifications and mounts at all original attachment points. No drilling, welding, or bracket fabrication needed.

Do I need to replace the receiver-drier or flush the system when installing this?

Best practice is to replace the receiver-drier at the same time and flush the system with approved refrigerant cleaner to remove debris from the old condenser. Check your vehicle's service manual for fluid capacity and procedure specifics.

What's the difference between aluminum and copper-brass condensers?

Aluminum condensers transfer heat more efficiently and resist corrosion better in modern refrigerant systems. They're the standard for current production vehicles and outlast older copper designs in longevity.