When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Cruchfield.com has a good "fit my car" tool. I have found that less than half of the available 5x7 / 6x8 speakers (coaxils, anyway) will fit with no modification to the car. Components are a good bet, but you'll have to figure out the tweeter issues.