44 front, 9" rear.
This might be helpful:
http://moose.ca/axle_widths
That is really nice truck. If it were me, don't go to crazy building it. Don't dovetail so you can still use it as a proper work truck. Keep your tire size to 35" or smaller so you can still DD when the mood strikes without white knuckles - or use it for hauling trailers, etc. Generally, just keep it sane.![]()
Then there is no need for the SAS then :flipoff: