I ride in Wisconsin and Michigan when I can't be out west. I run 380 mains stock. I had to go to 390 with the slp air horn kit. I also installed a set of v-force reeds and a slp can, my friend has the same sled but he has the pipe and can, but he doesn't have the reeds and so far in every drag race I am beating him. He is also 30 pounds lighter. So I think the reeds are worth the money on this sled