I think the size of the eye might be the least of your worries. I would be more concerned about the travel, the spring rate and if they will physically fit in the space provided. The size of the eye can use a bushing to make it smaller or drilled out larger. It very well could work but I would do my homework first to be sure you have the best chance of being happy at the end. Let us know what you find. I'm sure many members will be interested.
Have you considered Hagon rear shock upgrade ? They do two types of upgrade, a pair of cheaper rear dampers and spring shocks or a more expensive higher quality left side replacement damper and higher grade spring unit. The latter is the one I am going for as it leaves the Air shock in place and still usable, and having recently took delivery of a Hagon rear monoshock and spring for my Honda ST the quality and value for money is apparent. On the Wing I am having as on the ST a pair of Hagons progressive Fork Springs fitted as well.