Mostly question for Craig but am curious if the new booster used on the Panther site car was the single or dual diaphragm and what the difference in assist is between the two. If a single was used, is there enough difference in boost that the pedal ratio might be able to be lowered?

Second question is re the mounting of a master cylinder. Are the boosters specific as to a particular size or could a smaller one be fitted if found that would more closely match the Packard bore.