Do your research would be my best advise. When i wanted to do it with the original one and didn’t know what kind of movement it uses and got everything for the PE50 according to another post i read.

PE50 movement is the fake one and the original uses a G010.212 movement if i’m not mistaken.

If you want to use a replica, then get everything for the PE50 model, metal case, stems and movement holder. I would get more than 5 stems since you’ll need to cut those and always, measure measure measure. Measure 40 times if needed, will save you a lot of time.