if I were to go for wider axles on a 80 for more stability I would go 100 series axle for the rear. 100 axles are 65" wide. 200 series are even wider I believe at around 70". You would have to redrill the flanges for 6 lug. For the front I would cut off the knuckle balls and modify lcwizards housing spacers to work with the 80 knuckle balls-should be pretty straight forward-which would put the front wms to wms at about 68". You would need custom inner shafts, and a longer drag link and tie rod.