I would go with Bosche Platinum 4 tip plugs that are recommended for your 626. Give a call to Autozone and they will look it up for you and even give you the price per plug. These are gonna be more expensive than buying a 4 pack at Wal-Mart. However, Bosche Platinums rock and your vehicle will love you for it. I put them on my 91 Miata and love the how much nicer the Miata runs and sounds.