I have two 93 850's the axle nuts look different are the axle's interchangable anyway? because one cars is just for parts, the car I'm driving needs left front axle with eciter ring for anti lock brakes. no ring on daily driver and keeps setting code. and if the are different the axle I need the one that has The big nut axle where can I find it. please help me

 

They can be swapped. One may be an aftermarket axle and one might be the OEM axle.
Generally the aftermarket will use a smaller nut.