Sure power is nice,problem is,when you get to a heavier gasser like a G 38,the wingloading will become to a point,where scale speed is not possible,and very slow turns will become a daring exercise and aerobatics will become toylike and unrealistic.I dont own this aircraft,nor have I seen one fly.I would need to fly it to really make a decision and a solid comment.But if a a 120 flies it well a G 38 or Fuji 43 will only add chunkiness and loose the desired character most seek.
Its up to the pilot,but most who would buy the Curtiss would prefer to putz around the sky,rather than hang off the prop and do KE passes??