Since I never had the Bose system originally, so I put in around a 2800rms system of my own. However I am parting the car out but still want to have some base while maintaining my aftermarket 6.5s and 4 channel amp.
So I ordered the stock sub setup and wanted to run off my 2 open channels. I came across the write up below, and it seems the subs can handle quite a bit more power than the bose amp and has positive results.
So anyways, I will be doing it this weekend and post back results here as well.
DIY - Increasing / Improving the output of the OEM Bose Murano Subwoofer - Nissan Murano Forum