418 Stroker options....

That's a regular kit - you need custom blower pistons to make it work...
It's my opinion, based on my history which includes a bit of non-Mopar blower stuff, that if you need water or water/methanol injection you need to rethink the setup. To me it's a lot of complication and potential problem and if that does occur, it can easilly blow the engine before you know a problem exists. I call it a crutch. Others love it. So that's up to you but I'd never advise using a water or water/meth system.