Sorry to get a little off topic...I am running a 166" track with all the windows cut. Good eye guys. Pretty sure any driveshaft from 2005 up will work. BTW, the weight difference is minimal. I bought it off eBay for $99.00 and it had very little wear. One caution, change the bearing on the clutch side to a rubber sealed bearing.
166 ,eh?....there's a local shop that offers to refund $ and return to stock if your not satisfied with that track.
Have you run this track before ?