Yes, the unstudded Street Legal Class cars are supposed to be stock. The fast ones aren't, but it would be hard to hide a turbocharger in tech, [lol]. This "stock" rule only gives the newer more powerful cars an advantage. For example, even with this small turbo setup I am still shy about 75 h.p. to a stock WRX anyway. I did take a ride up to Maine this winter to race with another club where they don't have the "stock" engine rule. I use the car more for winter rallying than ice racing now anyway. I finished fourth overall in the Vermont winter tsd rally. I'm really having a lot of fun with it!Great job Mike. Set-up looks very clean. With the boosted GA would that put you in a different bracket in your ice racing competition scene?