Wheel fitment

Hello Everyone,
I know this has probably been asked before, but I did a general search and nothing came up. I have an opportunity to buy a brand new take off set of yamaha grizzly 700 limited alloy wheels and tires for $400. I know the grizzly is a irs rear and my 07 rancher 400AT has a sra… But with a spacer will they work? What size spacer would it take? Anyone try a grizzly wheel before?? Trying to get a quick answer. I think it is a good deal, or maybe not? Any input would be greatly appreciated, thanks!