hi everyone, 
new to the group, just bought a hovercraft with ea82, subaru 1.8l motor. Need to replace the prop on the hovercraft. Where is the powerband on this motor? I got an option of 66 " prop which runs best at 3600-3800 rpm, or 72" prop that will run best at  3100 - 3200 rpm. Which one will produce more torque / hp in the above rpm ranges. 
  
Thank you 
  
Marko