Have I got a ’99 Honda Accord CG9 and now I wonder how I can expand the Bose radio? Does someone have a tip for me, I only know the normal radios with the four holes to solve. Does an experience to upgrade the system or is it not worth the effort? I’ve been driving from the Honda Accord for five generations now and have another system, however, I wonder if it fits in the new one. Can one report what you have installed on the system? Gruss Natasha