Also look at:
Okieguys Main Welcome Page The Okie guys do a great job explaining everything too. The only thing they did that I won't do, is adding 3/4" tubing, to the top of the frame to "make the body sit correct.
Pete's garage has a great video on how to fix the body not sitting right: cut a small "pie shape" in the frame, where the trunk is. That trick would have saved me many dollars.
I learned in four years: If one Street Beast has a problem, they ALL have the same problem! You just have to decide how to fix it.
This group has a wealth of answers.