I am looking to replace the factor sound in my cruiser. I am told that because of the shallow door cavity, I need to be looking at units such as the Focal 130-A1 or 165-A1. Are there other choices for this situation? How are these speakers? I also will be replacing the 2Din deck with an Alpine 9857 and some sort of spacer or storage compartment. Don't have a plan for the mids in the back seat or the sub in the rear, yet. Nor do I know what I should do with the factory amp under the seat. Any help is appreciated.