From what I have read, the Stihl br600 owners are happy by far with the power. http://www.lawncafe.com/t12155-what-...dmax-8000.html Some are also happy with the redmax 8000. I can't believe you guys convert them. Couldn't you order the motor from the distributor, just like a mower shop? Maybe even just order the motor from the mower shop?