Hello DD. I bought your 12 Hole Injectors a few years back for my 2002 V8 4.7L AC. They are a nice upgrade over the aged OEM ones after 18 years of service. Best thing I like is that the Transmission seems to shift better. The lazy downshift when slowing into a turn from speed is gone. Throttle response is slightly improved but nothing major. Didn’t see any MPG gains. So far so good.