I had an 07 M8 with rktek head 14.5:1 compression and full SLP Single pipe. I had to run 2-3 gallons Rgas per tank because of high compression and lower elevation (3000-6000). Sled was the best NA M8 I saw. Since sold it and bought a PC.
Yes, I do it for a living.
A ski doo is worth crap.
A polaris is worth piss.
An Arctic Cat is worth its weight in gold.
Normally charge 9.99 but first appraisal is free.