NEVER even considered it for one of what I have... just thinking about the various older projects that pass through here. Unless I build a Hemi Formal... I don't see the need for space or vacuum problems. For the crowd who likes to swap in late model stuff... we can't be too many years away from someone trying a late model drivetrain with electronic steering and brake by wire...If I was going with a really lumpy cam, for sure I would do it. On one of your cars, I wouldn't bother. Your brake systems are pretty good stock.
I thought of this as a simple and somewhat elegant way to solve this problem. @Yatzee did a nice job running the plumbing... I'm sure the over the top crowd could pretty them up even more if desired. I think it would look like a stock install if you didn't know better.