Before you buy anything for this motor, your first purchase should be "How to Build Big-Inch Mopar Small-Blocks"....I'm hoarding parts for my 360 to stroke to a 408....I read EVERY word of this book and I'm glad I did....Soooooo much to learn and understand before you embark on this project.
I bought mine from Amazon:
http://www.amazon.com/dp/1932494065/?tag=joeychgo-20