I had to ship the BC Racing ER coilovers back to the vendor's warehouse last Friday. They (Q04) do not fit since the reservoirs do not clear the rear suspension. The vendor claims they do have ER coilovers for '14+ Camaros (Q10), but I only see BR available under Q10. The updated application list is
here.
Here is hoping they indeed have coilovers that fit! If not, I suppose they could also replace the hose of the reservoir with a bit longer one, so I could put it in a place where it would clear; I would not mind. FYI, I cannot just replace the connecting hose myself since it is pressurized and I'm not in the business of valving coilovers