What Servo/Master Cylinder is the best to use on..

[boygenius]

I would use a hard metal line for most of the length of the vaccum line to avoid kinks and possable leaks. As far as mounting it goes I have never really seen how the bus mounts the pedals and how much room there is down there. The plus side to removing the linkage is the added room but an advantage of leaving the linkage is the ability to modify it to adjust the travel of the pedal.