Add-on Livery Engines

Hi - Second question of the night! :-)I like the Royal Saudi livery very much but I also like using the TOPCAT tool for takeoff performance. TOPCAT only has the GE engine option. Is there a way to change the engine on the Royal Saudi Livery? I'm not worried if there are visual model differences between PW and GE, rather I just want the flight dynamics of the GE engine.Sound Possible?Andrew