i would like to narrow my rear track width on my truck. i have a 14 bolt,are cab and chassis hubs or drw hubs mounting flange narrower? and are the hubs steel or cast iron?

DRW axles are typically a little wider than SRW axles.

i know the axle assembly is but the hubs themselves,i was told the drw and cab and chassis had a more inset wheel mounting flange? just wanted some verification

As far as I know, dually rears that came under chassis cab's are a lot narrower than those fitted to trucks with boxes. I was just looking at a 70 under a cab chassis and it was about 5 inches narrower from back plate to backplate. I have no experience with the dually 14 bolt though.

-Jared

I have a 14 bolt with dually hubs on there is roughly 3 inches each side it moves rims futher under the truck and if you turn the rims and tires backwards man it really puts them under there i have spacers on my front wheels it puts rear tires outside edge tracking front inside tread real wide front stance while back is super narrow and you can tell its pulling its bitting hard