Sorry I should have been more clear when I asked about balancing. Is a hemi internally or externally balanced? I was wondering that because if it's balanced the same as that 3.7 then you can save money and reuse the flywheel assuming it bolts to the hemi crank. Also is the hemi's crank drilled for a pilot bearing?

 

What is compatible with my 2004 Dodge ram 1500 4 wheel drive ...what other yr rearend can I use

 

Why did you resurrect a four-and-a-half year old thread for that unrelated question? I think it warrants its own thread.