Car Stereo Recommendations

I am looking for a nice stereo to put in my 93' Jeep Cherokee Sport and would like some advice, here is what I am thinking of

Two (2) 12" subs (too much?)
Four (4) Speakers
Head unit (iPod compatible)

This is what I have found so far

[b54ebd7171b][/b54ebd7171b][/size54ebd7171b][/color54ebd7171b]Head Unit[=http//www.bestbuy.com/site/olspage.jsp?id=1134702498241&type=product&skuId=7675615]Head Unit
[b54ebd7171b][/b54ebd7171b][/size54ebd7171b][/color54ebd7171b]Speakers [=http//www.bestbuy.com/site/olspage.jsp?id=1099388425823&type=product&skuId=6981876]Speakers
[b54ebd7171b][/b54ebd7171b][/size54ebd7171b][/color54ebd7171b]Subs [=http//www.bestbuy.com/site/olspage.jsp?id=1134702499042&type=product&skuId=7675973]Subs

Will I need a box for the subs? Also, what kind of + how many amps is this going to take?

I have an Eclipse deck and speakers in my car. Eclipse makes really, really nice stuff, look around for some of their stuff.

yea, you'll need a box for those subs. Also the sub says that it handles up to 150W of continuous power, so i'd say you'd be good going with a 300W Amp. You could always go a litle more if you wanted tho...

you'll need wiring and a box.. also, the all important amp(s).

Does this one have a gps built in? Which one did you get tyler?
http//www.eclipse-web.com/cd/cd3000.html[]http//www.eclipse-web.com/cd/cd3000.html