Thanks, Yngmar
I do not trust swageless fittings, I think swaged/rolled would be more reliable (Am I wrong?)
So, the plan is to unstep the mast, measure all the wires and order on SVB (or on local company, if they will offer better price).
I'm in doubt about turnbuckles. They are original, but in very good condition, thread is working. Should I still consider replacement?