Hey, I just put a sony cdx-ca650x in my 97 xl, and i've got 2 pairs of pioneer ts-a6855 6x8 speakers coming that will replace the factories. I am planning on putting a couple subs in the back and was wondering what would work well. I need something that i can take out easily so I was thinking a JBL bandpass box with 2 10's in it. What do you think? What is your system composed of? Any help would be great.

First off, welcome! To answer some of your questions first we need to know your budget, likes, dislikes and so forth. Like me personally I always go for SQ, but some want to hit hard as hell. JBL is a nice speaker, and the bandpass box will make them hit incredibly hard. Audiobahn makes very nice speakers and they are also affordable. Another company is MTX. They have very nice speakers, and most are reasonably priced. I have a set of Boston Acoustics. They have great sound quality and will hit pretty hard. In the end it all depends on what you want, and what your budget is. Look around this forum and you will find all kind of advice. Good Luck.