For sure different, we have a customer on here that actually used the fox setup on his SN before we did the SN application. I think he mentioned that only thing he did was loose the swaybar and fab the pipe to the throttle body. We should have the SN kit stocked within 3 weeks and shipping, I would just hold off and wait for that personally. We changed the headers and pretty much all intercooler piping compared to the fox.
I dont believe the accessories were in the way any different than the fox but the sway bar was. I have never ran a fox cold side on an sn car. We just built specific fox and sn kits to make it easy and I just havent tried to interchange any parts. The fox kit comes out of the inner fender slightly higher so I doubt its all just going to interchange or exactly bolt up.