These cans work very well, no funnel section necessary. I have used them on all of our no cap fords and on our GT as well as one of my buddies GTs at the track with no issue. I have used them on our 06 as well as the 2019s. The threaded section may catch a little but it is pretty easy to get back out without forcing it. I went to Home Depot and got a longer section of hose that makes it really easy to keep the can and any drips away from the car. The trick is to not open the vent until you are pouring and open slowly until proper flow, do not remove vent cap all the way, If worried about the threads, you can purchase the gray section (sprinkler upright) without threads for the part that fits into the gas tank.