Hi dear Contaxians

,
anyone has experience using Metz 54 MZ3 with contax/yashica slr cameras?
At present -36 guide number is not sufficient for me, I would need a bigger one. It cannot be this type exactly but I need flash with accesory shoe (not with handle aside and many rechargeable batteries-it is not comfortable work with) and guide no. sure over 50 (use telelenses...outside).
Some flashes (not original)do not work with both cameras (yashica and contax). My old flash works with fx3 but not with rx.
Do I need two SCA adapters? Yashica has only: flash ready funct., so maybe only one will be sufficient. How does Metz 54 works with your cameras?
thank you, with best regards, Pavel