Small bolt to big bolt pattern conversion advice

The car: '68 barracuda, 10" front drums, 8 3/4" rear.
The questiion: What are my options for doing a big bolt conversion? Specifically I'm looking for
1. the option (redrilling, OEM parts swap, aftermarket conversion, etc)
2. the pros/cons
3. the approx cost (not counting wheels/tires!)
for upgrading both the front and the rear.
Author: admin