Quote Originally Posted by LS1SSZ28 View Post
so if i buy som speakers do they have to be 4 or 2 ohm? .
Either is fine -- speakers with sensitivity of 90 dB or higher and 4 ohm impedances will be just as loud/etc as factory with better quality.

If you want to match impedances more closely, and aren't that into upgrading to a serious system -- Infinity 62.7i for the doors, eu700s (in sticky) for the sails, and if you want to replace the hatch speakers -- any 5" speaker will work fine (the cheapest 4" speakers will be fine for quality here). 62.7i is a good choice also if you don't want to mess with running new wires or separate components (as opposed to coaxially mounted) since you can use all 4 of the existing factory wires to take full advantage of whatever power is available.