It costs about $17,000 to take a car to AMD's installation center and have it completely re-bodied. They build the body off of a jig and spot weld it just like GM would have done, the panel fit is significantly better than a Dynacorn body is, and you won't have the titling headaches. I had Craig do 2 cars for me and was very pleased with the results, he also did the mini tubbing and installed the quadra-link and frame connectors while he was doing the sheetmetal installation.
Here's a link to their price list:
http://www.amdinstallation.com/prices.html