how to install headers?

Without a doubt that's the way to do it if your doing the whole shebang at once. Did you make the adapter to slide into the frame to lift from? If so what size rectangle tubing works best to slide into the frame? Will a std. 1.5 ton cherry picker lift it? Can't really see what your using.

see pictures at http://www.forabodiesonly.com/mopar/showthread.php?p=1969746592#post1969746592