Could someone help me figure out how to change a locomotives drivers.

Hello, I am new to modifying locomotives in trainz and want to make a specific locomotive modification. I want to replace the drivers on the NYC J3a hudson that kl trainz made. I am trying to replace the hudson's drivers with the dreyfuss hudsons scullin drivers. It should look sort of like this image.https://ogrforum.ogaugerr.com/fileS...mageType/LARGE/inlineImage/true/5453 Left.jpg If anyone could help me it would be greatly appreciated, thanks.