OK. Im new here but not so new to car audio. I currently have a 2000 pontiac grand prix with a Diamond D3 12" sub powerd with a JBL BP600.1 . Very shortly i will either be purchasing a Jeep Liberty or a Ford Explorer and want to add one or 2 more subs. I will be doing a fiberglass box. Just wanted to kno if i could run 3 12s on that amp. I kno its an old amp but it still gets the job done.