I just used a spark plug socket and a really long extension. I had to loosen a ground on the drivers side of the intake and turn it up, but I just left it like that so next time I wouldn't have to. The plugs aren't on the side of the block, they're in the center of the head. Like the Hemi that it is and the new dodge isn't. You will have to take off the coils on the pass side but with a 10mm you can do that and the ground.