front wheel bearing probs

Ok guys need help!!! Tryn to put mag wheels on my 78 1000 a2a that a family mem ordered online for me but they didnt get any info on what year bike the wheels came from. Heres the prob!! The i.d. demensions are smaller on the mag wheels than the factory spoke wheeld so none of my other parts will fit what should I do??? I tryd switching the baerings from fac wheel to new wheel but the o.d. dem are diff to. Even tryd to find new bearrings to fit but dnt know what year bike the wheels came from. The nums stamped on old mag wheel bearrings are 5302z made by nachi. What can I do to make these work?

does the rim itself have any stamping or identifying marks or names?

Yes front wheel has. Made in japan Enkei-3 kawasaki tublesss F-1057 and J 19×MT1.85 DOT. Rear wheel has made in japan Enkei kawasaki T 16×3.00TL DOT but no other identifying nums

I am running the same rear wheel as you, 1979 ltd kz 1000, the rear wheel bearings I am running are 6303z, my front wheel is a little different, its 2.00 so I am not sure about that one

Did u have to get new swing arm bolt an spacers or did u just change bearrings so u could use the factory bolt and spacers? Im really not sure which i should change!! The bearrings to try to make the hardware from my spoke wheels work or just get all new hardware to make the bearrings tbat are in the mag wheels work?? Wut do u sugg?

And also which year and model did ur rear wheel come off of please for future ref?? Thanks for tha info im finding that there is alot more help from you guys than wut i can get here in nashville thanks again

My wheel came stock on a kz 1000 ltd 1979, I would think if you tried 6303z you might get lucky and be able to use your stock componets, If you can get wheel bearings local, buy one take it home and try it, think they are around 6.00 what i paid for one, if it dont work you can return it.
you might check out some police versions of these wheels, seems mine uses the same bearings as some of the police bike.