Which Collaro Motor Might Be In This Expert?

[Garret]

Hello!

After doing some research and checking measurements on ghost holes, I am fairly confident this is the spring motor layout that was formerly in my Expert Senior. I tried the style of brake shown in the photos on my motorboard, and it screwed right in to existing holes in the same configuration above. Additionally, the holes seem to line up with this style of sped control. The photo is of an Expert Junior that was in a Special Auction Services auction last year, and the ad mentioned that the motor was a Collaro, but didn't state which one. Do any of you have any idea which Collaro motor this might be with this brake style and speed control?

Thank you!

Garret