slant 6 / 318 swap

I'm stil running 9 inch drums up front on my s/b swap. It's fine. Though I would suggest discs when you can. Factory part should be easy and cheap to come by. Though a new system, like Wilwood for example is a smokin upgrade.
Late year B body parts, ie; Cordoba, with the larger discs will fit on even with the slightly taller spindles.