Great effort so far Daniel. I have been following this with eager anticipation for the next update.
I have a Firepower just like this I got from BikeCity, but no boards backglass transformer, shooter and missing bits on the coin door.
Once I finish off the Flash I might tackle it.
I have tried everywher for a Backglass but very hard to get, so I am going to see if I can get a scan done of one . If that works out I will see if I can get a spare one for you.
Also love the drop target idea, I am planning on doing the same but I have been told that because Firepower is a fast game thye drop targets will take an absolute beating.