Can you message me? I'm having a hard time with the same set up. I made an account to message you but it won't let me.I had the same question a few days ago and reached out to BRP for a response. Here's what I posted in another discussion:
I contacted Can-Am/BRP customer service and was told the customer service representatives are a call answering service with no product specific information. The customer service rep provided me with a number to BRP. The person at the BRP number confirmed the parts are the same, with the 715006360 being the newer part number. It sounds like all they did is expand the years (2020 & 2021) in their description for vehicles it's compatible with. Not sure why that would require a different part number? On a funny note, the BRP rep went on to say I could Google "Can-Am/BRP instructions" for a very detailed set of directions for installation.