I'm not all that familiar with the NBS GM's, but with my OBS all I had to do was run a power wire to the seat and ensure a good ground. I ran my power wire straight from the fuse box and had the option of power all the time or just power when the key is on. I selected the power when the key is on.
Mounting the seats is another story. Not hard, but in a NBS probably not as troublesome. Hope this helps you out, good luck ~ POWER IS BETTER