Russ (aka plumcrazy) put this list together a while ago.

http://www.mopar1.us/stroker.html

You will need to find a piston that will give you the compression ratio you want with the heads you plan on using.

The 4" cranks can be balanced internally or externally. External requires using the b&m flexplate, a weighted balancer, and drilling some holes in the crank. Internal balancing requires a neutral flexplate and balancer and adding mallory metal to the crank throws. Internal is the more expensive of the two.