As for a speed pedigree, the X40 doesn’t disappoint. The builder says the boat hits 43 knots on the pins, and cruises between 27 and 33 knots, depending on how badly the owner is craving his favorite onshore nosh. To achieve these speeds, Reliant matched twin Konrad 660B sterndrives to a pair of 480 hp Cummins QSB 6.7 engines. The sterndrives not only provide power, but they also work well with the space considerations, and they slide up before entering the mothership for stowage. The choice of a sterndrive also allowed for more room on the accommodations level.