does a eta 2824-2 fit in a SD43 ARF best edition 904 steel ? can i buy a Eta and change it one to one , it would be nice if some pro can give me the info , do i have to look for something in special , are there difference ? i saw there is for exaple a eta 2824 with date on 3H in white , this should me the one for the sd 43 , but do i have to take care about more ? thank you all for helping me out with this