Not sure about 07 charger, but being a first generation LX maybe it has the same
2 piston Aluminum PBR calipers with phenolic pistons as the last 2 05 Magnums I've had.

If it does, there's probably not going to be any corrosion, but sometimes the
Plastic pistons develop odd marks in the sides which cause them to stick.
I haven't been able to figure out where the marks come from but they did it twice.
Might even be my fault, I don't know.

Anyway it was the easiest caliper rebuild ever. 4 bucks for seals,
4.50 for new pistons, 99 cents for a copper washer. Take apart and replace the components.
Nothing there to hone and no corrosion at all......