The only problem is the price of them. Given they are 2014-2017 models only so they are pretty new. I looked on ebay and they ranged from $4500-$6500. One advertised for $4500 the wrecking yard ended up doing for $4300 and free shipping that was complete with all manifolds, sensors, coils etc but no wiring or pcm which i dont need anyway and best of all it had only 2000 miles on it. Given that a hellcat short motor is around $4k shipped im getting 356 alloy heads, coils, valvetrain, timing set and 6.4 intake for $300
Plus here in Australia we pay that sort of money for a 2005 5.7 so im happy enough.

When i get the motor i will strip it down and try and establish the durability of the pistons and rods and report back here