It looks like a fellow pinsider by the name of TimeBandit has figured out how to add drop targets to the Pro versions of ACDC, Ironman, Star Trek and Tron. Here are some videos of them in action in each game.
Full and detailed information can be found in his thread here:
https://pinside.com/pinball/forum/topic/how-to-put-drop-targets-in-your-stern-pro-sam
I noticed a URL on some of the after market boards used in this mod and looks like they have some other pinball mods like the GI Theatre kit for ACDC Pro/Metallica Pro to recreate a similar light show as the Premium/LE.
Check out their site as I see other mods and kits as well.
Full and detailed information can be found in his thread here:
https://pinside.com/pinball/forum/topic/how-to-put-drop-targets-in-your-stern-pro-sam
I noticed a URL on some of the after market boards used in this mod and looks like they have some other pinball mods like the GI Theatre kit for ACDC Pro/Metallica Pro to recreate a similar light show as the Premium/LE.
Check out their site as I see other mods and kits as well.