I have a 1826,they claim to be their off road carb.I've never had it in a steep incline,so I can't say how well it would act. It was installed and set up by a local carb shop by the PO.The carb works flawless,fast idle sets and drops off with a tap of the throttle. I looked up on Edelbrock site and no mention of this model,just a tune kit.Summit lists it at $379.00...A clogged filter and a gas valve on the wrong tank have been my only fuel problems...