500+ci Builder
I to had the same concerns as you did when wanted a 528 Hemi , I can tell you to stay totally away from Indy , they a total waste of time . I settled on Gosselin automotive , he was thousands cheaper then everyone else and a really nice guy to deal with . He custom builds all his motors in house and every motor gets run and broken in before you get it ( and yes you can go see it get run at Jims shop . He will ship the engine right to your door . He does any kind of Mopar engine you want . In my case it was a 528 Hemi . You get all this and dont need to deal with the arrogance of Indy or Barton .
There contact info is Gasselin automotive 1 774 573 0127