Look into EPI or Dalton. Had an EPI kit on my 05 800 I bought from highlifter. The low-end torque difference was great!

 

Try to make do with those tiny 27" tires for now.

 

Yea it's gonna be tough trying to get around on those little 27's but maybe i can manage. I wonder if i close my eyes and click my heels like that gal in the movie did if it will suddenly have an 800 in place of the 500 and some 30's and a lift..... NAH aint even gonna try haha