That's a Merlin 140.It's a real rocket with a 140, way more than adequate. I was at half throttle or less for most of the flight in the video.

My equipment tray is about 1/2" below the cockpit floor. The cockpit bottom is uneven so I had to carefully locate everything for clearance. Retract and brake valves/servos, and UATare against the sides, ECU at the rear, guages and fill valves are located where there's clearance. The fuel pump and solenoids are below the tray and air tanks in the nose.

I don't have a picture of my elevator servo, but I mounted it pretty much the same as shown in Woody's thread.

Joe