Cast versus Forged?

The best thing you could do is wait until the engine is torn down and see what you've got. I don't know if you have a machine shop figured out or not but the guys at Automotive Machine and Performance up in Lawrence will get you going down the right road. They can get it checked over and then help you decide what you need to get the engine you want. These guys have been in the business a long time and know the Mopar stuff like no other.