THIS MY FAV PICTURE RITA TOOK OF THESE BOATS! THIS IS THE BEST RUNNING BOAT OUT OF THE TWO. THIS ONE HAS A .21 OS CAR ENGINE WITH A OS 46 FX CARB AND A 8X4" PROP! LOUD LITTLE SCREAMER. THESE BOATS ARE FOR STUNTS NOT SPEED! THEY RUN FASTER ON GRASS THAN WATER! AIRBOATS ARE FUN AND A CHALLENGE TO RUN!