Look at the sticker under your hood. You will find the OEM plug number, but not the manufacturer. Type the plug number into google search, and you will see the manufacturer in the results. OEM will be the best plug for your engine. The only time you'll think you have better performance is if you replace old worn out plugs with new ones. New OEM vs New anything else= OEM will always be best.Most 2.7s came with champions. Most 2nd gen 3.5s came with NGK double laser platinum.