The only problem you might encounter is the length of the motor. The 270 is a good bit longer than the 300 OS. I have both and I was going to put the 270 on my GP Pitts but it was going to require moving the firewall back whereas the OS was just the right length so I installed it. I have a Menz 22x8 prop on my 300 twin (don't remember the rpm) and it pulls the Pitts around rather well. Mine weighs 17lbs wet. Maybe the Eagle can deal with the longer motor - good luck.