After having seen all your franken project and the nice result on the RBII, I decided to try to Franken the RBII that is on the way from the dealer to my home.
I already received a LWO 283 and I'll get a second one in the next days.
As far as I understood, the rep handles won't fit directly, I need a specific movement holder (hand made) and a way to connect the chrono pushers to the movement (I saw on Guru's watch that specific longer pusher on the low 283 can make it work)
I'll perhaps need also a silver hour wheel (the one I got one the first movement is a gold one)
I'll really appreciate all the help and experience you can give me to achieve this project...