5-Speed

Hey guys. I am going to be cleaning out some Jeep parts from the garage this weekend and had a question on what I should throw away. The one main thing I will be getting rid of is a 2wd front axle off my 99 XJ. The question I had is will it be worth it to pop the hubs and spindles off it and keep them as spares? My new axle is a D30 out of a 98 ZJ V8 (CV style joints). Will they even be the same? I also have the 2wd driveshaft and stock XJ steering. Should I just chuck those in the trash too? Any input would be great. Thanks.