Actually, quite a large number of hillclimbers are running turbo'ed 2-strokes. Here's a pic of a Racer-X turbo sled.Turbo 700. If I could afford it, that would definitely be the next mod on my '01 800 RMK.

 

go to Americansnowmobiler web site a lot of the racers use this site

rmkcac , on the 05 sportmans is the new changes worth while over the 04 .
been thinking about getting a 600 but tring to decide on the 04 or wait for an 05

 

Got a couple of friends that run turbos WHEN the run they run real had but there always having to play with them not very good for boondocking though becuase of thr turbo lag