I wanted to know what size of speakers to buy for my 2001 Hyundai Santa Fe GLS V6. Please specify sizes for the front and for the back. Thank you! A: Well, you've got different sizes in the front and back and maybe even 3-4 sizes total if you have a premium soundsystem from the factory. For reference purposes go to http://www.crutchfield.com and you can find out what speakers etc you can use and compare models.