I also went with the cam snout adaptor route.
Learned the hard way that the stock cam sucks.

It's barely tips the valves off their seat. The stock Magnum camshaft is 0.39/0.40" lift.

Decent torque. It's make more torque at idle than some engines do at 2000rpm. Here is my truck in 1st gear.

http://www.youtube.com/watch?v=nCmRdB1isoY&feature=player_embedded

Problem is there is nobody home after 4000rpm.
I recommend a cam swap.

The B&M flex plate is the easiest solution to the balance issue.

http://www.bmracing.com/PRODUCTS/Chrysler-SFI-29-1-approved/SFI-Flexplate-Chrysler_7