- Stock #248798 - TWIN MERCRUISER 502 MAGNUMS HO 430 HP EACH.! MERCRUISER BRAVO ONE I/O'S.! HAS ONLY BEEN USED IN FRESHWATER.! Sharp 31 Scarab in Very Good Condition.! Original Owner.! Seller loves the looks, lines, very sharp color scheme and her overall performance Favorites include her "eye catching looks", cabin layout that will sleep 2 or more and on water performance Powered by Twin Mercruiser 502 Magnums HO 430 HP each and paired with Mercruiser Bravo One I/O's with stainless steel props Make sure to look through all the details, pictures and options that are listed below. If yo... read more