Are the parts on the awd and rwd interchangeable in regards to the front end? My son wrecked his 2011 CTS Coupe RWD and we’re looking for a salvage to buy and swap parts. Really just needs front end parts such as radiator, bumper, fender and such. I would imagine the CPU is different also. I understand the drivetrain would obviously be different. I’m more concerned about the front most parts. Pic attached.