You won't be able to find any tires in the sizes you are looking for, unless you go with Titan 489 or special-ITP sand tires.

Most people end up going to 25" tires. I have heard the Maxxis All-Track is a good choice because it's a good all-around tire, and it shorter than the claimed 25" so it's closer to the stock size, but still taller. I have never used them though.

Personaly, I like Kenda Bearclaws. Not too heavy or aggressive, and look great. You can get them in 25" sizes. I have talked to/seen many guys run these tires on Wolverines and love them. You will lose some power, but every taller tire will take some power.

They are good on hardpack and in the mud. They also have a stiffer sidewall to prevent tire rollover for better handling. They are a very tough tire as well.