Look at the hardware that Mini Cat Racing USA sells on their website at
www.minicatracingusa.com Look at the micro hydro they have there ready to run (no radio or batt) with water cooled brushless motor and ESC.
ORIGINAL: TrunkMunky
Heck I haven't figured out what hardware will work yet,this thing is tiny and space is limited,the transom is only 3/4 inch tall,that don't leave much room for good hardware to mount and it's submerged drive,maybe no big deal on that ,but gonna go surface drive probably,I know your boats are all very fast,don't want to get 'lapped by a cat ".