I'm in need of the following parts and I'd like to stick to OEM so does anyone know of someone that gives good pricing on GM parts? Like perhaps someone who works at a dealership or knows someone that does?

I'm located in Southern California but I frequent Las Vegas.

Looking for:
Front Rotors
Front Brake Pads
Front Struts
Rear Shocks
Rear Wiper

The car is a 2006 2.4 LT and has 124k miles on original equipment (except brake pads).

Also, does anyone know if I need to replace the strut or shock mounts since this is only for maintenance?

Thanks so much!