The 9433 only gives up pennies to the 9434,....the bigger motor is just plain a bear to fit in.....I’ve evolved and refined the Pittman swaps to make them simpler and much more affordable for the end user,......where the rubber meets the road for me, is in testing, and the 9433 performs just fine,....low amp draws, lots of cars, and smooth running on a rectifier,....if it passes that test, then electronics is just the icing on the cake,.....all of these scale sized Pulmors basically have the exact same construction,.....use the big motor, and you have no choice but to wipe off the stock rear mounts,...that’s all the Hudsons, Mohawks, T1’s etc......the 9433 is just a perfect fit,....we’ll save all those CPR motors for the big MTH steamers Lou,...😉
Pat
