93 has been converterd from r12
 

So I'm sure this question has been answered SOMEWHERE before, but the search is failing me (more likely I'm failing by not phrasing the search properly, so there's that)

Anyway, since I can't find it I have a 1993 sc400 that has been converted previously from r12 to r134a and there's no sticker saying what pressure/how much refrigerant to fill it with, so just looking for the numbers if someone could point me in the right direction please.

Thanks!