Looking for some info. I am purchasing a 2019 2500 to replace my 2013. The one I am looking at has the standard mirrors that do not have lights or flip up. They do have defrost and power adjustments. I want dealer to install the factory tow mirrors. But they are telling me they cannot find part number or know if it is possible. If anyone has accomplished this on a 2019 please let me know any info. Thank you