Ken and Chuck-
Thanks for your replies. I 'm still messing with the frame and drivetrain. I will go with the frame mounted unit as I am looking for a stockish, sleeper look in the interior, using the orginal brake pedal configuration, rather than a firewall mounted booster. Also, I'm partial to any way that eliminates clutter in the engine compartment. The body I am working with is probably going to get a new smootihie firewall, another reason to go with the frame mounted power brake booster.
BTW, I am new to the forum and not related to "Phat" who's archived posts I have come across.
With thanks,
51PhatBoy