My fifty-six is a 6100 big bolt but I believe it all fits pretty much the same. My headers are long tubes that are really designed for 67 to 72 big block pick-up wit a 4spd. My steering box has been moved or the headers I chose would not fit anyway they don't reach the as fare as the master cylinder and booster.
Here are some pictures of what I have so far.

The brake unit I am using
http://rides.webshots.com/photo/2701798080096773078qEsBli

The 496 stroker being mocked in place and the new steering box
http://rides.webshots.com/photo/2116948240096773078UOFriQ

One from the top front
http://rides.webshots.com/photo/2008997720096773078MfaEcw

Ok I don't have one that show the header brake unit clearance but my headers terminate at the bell housing cross member.
There are many pictures in my webshots of this project feel free to cruse through them hope they are of some help to you.


The difference between men and boys is the price of their toys.
Grant from Roy, Washington
1956 6100 Chevy Dump Truck in the Gallery
1964 GMC Drump Truck in the Gallery
user
http://s1301.photobucket.com/user/56Taskforce/slideshow/