I did a lot of research on replacement speakers for Amber Vaughn. So far she has replaced the rear door speakers with Infinity Kapa 20mx. They are a great mid range speaker at 2.5 ohms. The require a little modification, but the can fit in the original speaker pockets. She is running them without the crossover networks and they sound great. We have a plan for rear deck and front door using Infinity Kapa speakers as well. The front door sail speakers are an unknown at this time as we don't know if the 20mx speakers will fit the enclosures, even with modifications. If they will, we will use them, if not we'll probably use a 1 inch tweeter in there. Her front speaker is from a Pacifica and the mounting area was massaged to make it fit when the dash was out. Big magnet and sounds great!