Go with what ya want but if you open up that 61 full bore on that cub, look for the wing to fly off or lots of flutter on the ailerons. Of course you can always cut back on the throttle once airborne and plenty of speed for takeoffs. You open up that 61 on takeoff and it'll be going so fast it'll be airborne before it even has a chance to go right or left on you down the runway! About 30 feet and it's airborne at full throttle! lol

That plane wasen't meant for speed. My OS 46 AX i have on my current cub has about all the speed I want without losing the wing.