HPS if they make it. Sure they do, it is just a Doo. Tried a lot of them over the years, only found two that work and don't screw up how the sled runs. GGB didn't cause any bogs or strange running, but rusted within a week and no more power. HPS actually makes power, based on revs and comparisons. I just paid close to $500 for an HPS for Tater's new Summit. You get what you pay for with cans. I literally am going on my third season with the HPS cans on my sleds, they still look like new.