Well lets just start a thread for all your F7 mods....
First things first... the coupler has to go, and the gigantic hole in its nose.
2 Rail pilot and a Kadee coupler will get me started. Had to do some grinding/sanding to get the pilot to fit up tight against the shell. The bench belt/disc sander handled that task just fine.
The nose lifting lugs had to go. In the wrong spot we all know, and I'm doing mid to late 1950's to go with my GGD Super Chief and El Capitan set, so they don't belong there anyway. I'll have to fill the holes and touch up paint when it's all done. The color on the 2R pilot don't match anyway, so it will all get some touch up paint before weathering. Pulled the lift lugs right out with a small pair of vice grips. Could re-use them if I wanted or need to.
Feel free to post your mods here as well. I have a list of things to do, including renumbering all 4 units.