New door mount tow mirrors?? 2021 3500
 

I just bought a 2021 Silverado 3500 CC, SRW diesel. The dealer bought it as a bed delete and then installed a warner utility bed. The problem is they left these tiny door mount mirrors on the truck. We tow trailers and it's not possible with the small mirrors. I've seen larger tow mirrors but having a hard time finding them. I have found 1500 door mount mirrors that look the same, but not sure if they fit.

Can anyone point me in the right direction?

Thanks in advance!!