[tblake]

if you tried to hook any aftermarket speakers to a factory head unit, they probably wouldnt sound very good at all. Most factory speakers have impedence of 6 to 10 ohms, and aftermarked use 4. And as lightening audio for a brand? I think I'd save my money and not buy any cheap crap from wall-mart. As high end manufacturers make cheaper models to sell to places like this. Kinda like pioneer and premier. The cheap pioneer stuff is sold at wall-mart. If I were you and your factory speakers were bad, I'd look at replacing them with factories unless you plan on getting an aftermarket head unit.