There a ton of DIY guides out there, just not for our cars. Exact same process as any platform so easy to get a game plan.
If it is noise only that you want to resolve you can do a few minor things to drop decibels in the cabin.
Rubber liner for the trunk, noise deadening mat under the trunk storage cover, noise deadening spray for rear wheel fenders, etc. It is all stemming from right there under the trunk storage cover thing.
@doublespaces the fold down seats are stupid heavy. I want to say ~50lbs. Removing them the first time was a PAIN. One of the bolts is tucked super low. It noticeably changes the balance of the car, but unfortunately it is in a bad way. Unless you have made a huge effort in dropping weight from the nose of the car the car just feels off. The traction issues this platform has out of the box also makes removing rear weight less rewarding.
Alternatively, unsprung weight shedding makes a huge positive impact for this car.