There were some well-used Hackers at the D4 finale this past weekend, definitely a testament.

I know the front mount of the Hacker is the same for any 15xx series Neu w/HD or F3A gear box. Don't know about motor diameter though, so not sure about rear mounts. Think they are very close.

Other major RC forum out there has a lot of motors in their classified section. Of course it's nice if "one of us" has or comes across an extra for RC11 though.

Keep us posted on your progress, and I'll look forward to flying with you next season and seeing your kick-***** setup, whatever it is...