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PL400 4 bucks a tube and very strong.

You might want to look into something called crest factor.

Crunch GP10D2/D4 Hifonics B10SQD4 Hifonics B10D2/D2 And i got mine from onlinecarstereo.com they are authorized dealers of all maxxsonics products.

The spl series are good subs. Effecient and handle some decent power. 300 watts on one twelve last year, 142 on tl, then 3500 watts on the same twelve, handled it well, sold it to a friend and still plays strong.

Hifonics brutus rounds or squares, crunch ground pounders paid 60 bucks for mine, and i am doing 144 on music with em.

You should have no problem getting 5 cu.ft into that trunk, and these subs will work in sealed enclosures. Soundstream recommends stuffing the enclosure.

How come you cant fit a ported box in a grand prix, you should have plenty of room. I wouldnt get rid of the 15s, also soundstream does not have sealed enclosure specs on these models. I suggest measuring youre trunk and see what you have to work with. You can work with these subs in a ported enclosure anywhere from 5-10 cu.ft depending on power application. I will however see if they will sound good in a sealed enclosure and what size.

Term pro / Term pak, if you can afford it (249) US is the best. I have used WinIsd beta and like it, for being free anyways, but i use them for reference mostly. Pencil, paper, and calculator always finalizes enclosures that i build.

Its good i cant complain for paying 400 bucks for 2 10s and the amp. The subs sound great and the amp performs well too.

S**t sorry. lol heres the link http://www.cardomain.com/ride/3089758

Hey everyone My name is Bryan, i am from Ontario, Canada. I drive a 00 Chev Cavalier, which i have competed with for several years now. I work in home restoration and also have a small audio shop in the area. Also are some pics of my new system, which i am not finished in the trunk yet. Opinions and comments welcome.