My buddy has a '17 Hellcat, he took it to a shop in Indy and had the whole engine torn down and rebuilt with top-line parts and the 4.2L Kenne Bell supercharger. It made 1223 RWHP and he wants to add a Snow methanol kit for some extra juice; he plans on taking it to the Texas Mile since he's from there, and being a 6-speed, it's not like he's going to be able to drag race it well without probably breaking stuff. He got all the driveline goodies, triple plate clutch, upgraded shafts, carbon fiber driveshaft, built rear end, etc... but it's a full-weight car otherwise. I'd guess he probably dropped enough to have bought a second stock Hellcat for what he put into this one. Needless to say, he loves it.