OEM front and rear axles.

you should be able to get them from any parts store,the axles dont have anything to do with the gearing,even with the granny trany,find a wrecked one in a junk yard pull them ,put in yours .is yours bad or what is the problem.

for the rear diff when you look at the back side of it does is have a cover? if so it is the 8.8. if not than it is a 9". for ratio pull the axle code (on the driver side B-pillar)and i'm sure someone can can find the ratio for you. Don't quote me but i do believe that you have a Dana 44 and not a 35