This is the path I was going to go down, until I did lots of research. It'll fit, but it's not ideal. A Challenger Extreme 2.5 would be a better fitting track, no mods. Or, with a bit of modification, you can get an X3. Tracks USA has the X3 on sale right now, until June 1st. Awesome deal.
There are significant wear issues going on with the Polaris 2.6" track. It appears to be due to the lack of outer nubs, making the track move around more than intended. I wouldn't drop $1k+ on a track that may fall apart in a year.
You can get an X3 162" for $725 right now. Add the 7 tooth drivers and do the chaincase mod, and you're probably still cheaper than a Series 6 163".
