The demon is 840 HP with regular caps.
And your point is?
if you are going to invest 5-12k into a new engine spend the money for every bit of insurance.
Demon also doesn't have ARP mains or Rod bolts......are you going to tell me just because that 8XX hp engine doesn't use them you won't?
Demon blows up ...you go back to the dealer for warranty.
Hudsonshornet's engine takes a crap because the mains walked or he decided to go with stock rod bolts because the Demon uses them? .....where is he going to go for warranty ?