Hi, and welcome to Caraudio.com. This question gets asked almost once a day by new people to the forum. If you would please take advantage of the search feature in the upper right hand corner of the site, i am sure there are plenty of threads that will be returned by this search engine and you will have a good idea of what you might possibly go with. Starting a thread like this doesn't help anyone, and you get idiot responses like posted above. Once you do some searching and then some reading if you want us to help you to make a decision between several different woofers you have narrowed it down to, that would be a better reason to start a thread. Thank you.