I just bought my Forenza at the beginning of December and love it. It replaced my Nissan Altima (with 317,000 miles) that I hit a deer with. I went to Crutchfield to check what speaker sizes I needed and it informed me I needed 5 1/4" in all four doors. I bought the speakers I wanted on ebay and as it turns out the back door speakers are 5 1/4 and I believe the front doors are 5 1/2". I had to do some modifying to install the front speakers. I'm going to contact Crutchfield to let them know of this error, but wanted to let people know that the actual speaker size for the front speakers is not 5 1/4'. I hope this helps someone out.