The impeller will help you get out of the hole aslong as the one you put in isn't supposed to add lots of MPH and the intake grate will help keep the pump full of water while you are cutting up. The sponsons dig in when you are turning hard and help keep the ski planted, where as if you want to "slide" more stock sponsons would be better for that. There are a few different brands of aftermarket sponsons I'm not exactly sure what ones are available