Amp guys, help with diode ID from old amp from Japan

[jdandry]

I am looking for replacments for these SS recto diodes in a old 2xEL84 amp. On the schematic it reads FR-1M. I attached a pic. They read 75A.They are also bypassed wit .002@630v snubbing caps. (just learned about those!) Can I replace them with 1n4007? Thanks!