if you want stopping power, I suggest the late model dual-booster swap. :thumbsup:
Feel free to measure and theorize til your hearts content, but spinning those parts in their tight little circles just does not constitute a significant gasoline draw in any way. that was a theory back in the day (hence the introduction of the CAD, auto hubs, etc), but they all fell by the wayside because they did not produce anything worthwhile (they did produce a lot of headaches for us owners of 20 year old trucks with 20 year old vacuum lines though :fs1: ). it sounds like a good idea, but just didn't measure up. heck, you might lose any theoretical gain just by the increased weight and wind resistance of the bigger axles. :dunno:
Nothing wrong with swapping in better axles for more strength though. :thumbsup: and don't forget better gearing. :D