Op hasn't actually mentioned his build budget yet...Lol,yup I know,it's easy to spend someone elses cash. But whats a used hemi,say a 5.7 and trans worth? I've seen entire Dodge trucks for sale here for less than 3 grand. That should get him everything he needs.
Truly a location dependent issue on cost. 3k at the local junk yards will earn you a laugh with a finger pointing your way to the front door to leave.
The sell the ruined HEMI's for more then 3k.