I just picked up some new speakers for the titan (blew the old ones), and I got the 6 x 9s installed up front by an audio shop. I wanted them to put some 6 x 5 components in the rear, but they wouldn't take off the back panel because of the seat belt. I want to put them in the back myself (I know how to swap a speaker), but I had some questions. Do the components have to use the tweeters that come with them, or can I just keep the ones in my dash? (The ones that came with these are real POSes) Can I just swap out the backs with the components?