Here is a hydroboost set up that is operated with a slave cylinder, the original master cylinder stays on the firewall.
[IMG]http://inlinethumb61.webshots.com/29052/2598576140080251109S200x200Q85.jpg[/IMG]I mounted the master - booster - slave combo outside the frame under the cab.
The master slave system operating the booster and primary twin circuit master cylinder is by no means ideal. I only did it that way because the 6V53T left absolutely no room under the hood for the booster, and hardly enough room for the original single circuit master.
This approach could work for your truck, but I would divorce your clutch and brake master cylinders and mount the booster on the firewall before I did the master slave booster master contraption again.
Grigg
