Warp 9 rims from crf450x to wr250r

I just got a set of warp 9 rims off of somebody that had them on a crf450x and I want to put them on my wr250r does anybody know what all needs to be done or what is needed to modify them to fit? Can it be modified to fit or do I need to get new hubs and go from there?

It will basically be a custom project if you want to use the whole wheel assemblies as you bought them.

Lacing those rims to stock hubs makes it no different to install than the stock wheel assemblies, provided nothing causes clearance issues with the extra rim/tire width.

Myself, I'd make sure to set aside the money needed to use a motard-worthy from brake rotor and caliper since the stock rotor and caliper already feels average at best while on the road coming down from speed.