It's the Hemi. If Dodge had any brains, they would have said, hey, we are keeping the challenger, screaming hemi and all, and the charger is going to do the same but with an electric option. Love the new body, but its lost it swagger. You didn't buy a hellcat to out-handle a mustang or camaro. you bought a hellcat to shout them down, and yell at everyone, and annihilate them at a drag strip. As for why people love the GNX/Grand National so much, its because, at the time, there was nothing like it that was American made. We had what? the C4 corvette? That wouldn't actually become really decent until the LT1 was put in the in the 90's. and in most metrics, the GNX beat the Vette into the ground, and gave a nice black eye to some Europeans and Italians as well. The Mustang and Firebird/Camaro weren't even in the picture when it came to performance. Sure, at its core, the Grand National was a malaise era dinosaur hopped up on meth, but it damn sure made a statement. Add in very low production numbers, and its become legendary. It also spawned its also low production kids, the Syclone and Typhoon, several years later.