Thank you for your answer ! I had the pt33 and the pt96 is coming! I wanted to confirm that the support base for the engines was the sameIf you have the Pt96 mainboard you need the 2312A motors. Unsure what you mean by stay well? The mounting bosses are identical for 2312 and 2312A so they are a direct swap mechanically. The new and old motors/mainboard are not interchangeable however electrically (different KV and winding inductance).