Lucky Me, Now What

It all depends on how deep your pockets are, Personally i wouldn't install a BB in a damn near perfect 70 Swinger, Theres alot of money involved, I was into BB A bodies & thats all i ever wanted & built, But for me anymore it'll be SB for an A body, much cheaper & fairly simple, Plus the A body works much better with a SB & they can still be very potent, With all that investment you'll be out, your better off stroking a 360 to a 408 & call it a day, Car will work/handle great & should pull off 11.0s all day long on pump gas in a full body 70 Swinger & be VERY streetable.