I love these coil packs!! Great fuel saver, but I’m a little confused about why these cool packs are for both a Gladiator and a 2016+ Grand Cherokee at $299 but if you look at the coil packs listed for a 2016+ Grand Cherokee, the Gladiator is not listed as a vehicle they fit and the coils are $10 less? Does one fit both vehicles and the other only fit one?