Factory A/C in 1967-1972 Darts

YY1 said

Which condenser would you recommend?

My 1973 B body was converted to R134a by the previous owner.
It does a good job of cooling but the evap box under the dash sweats and drips.
It is NOT leaking.

50 on the low side and 225 on the high.
Blows 48 degrees at the vent on max.

I wonder if a more efficient condenser might help.

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At what RPM and what ambient temps? How much freon do you have in it? That seems like it is overcharged to me but my experience is in dry desert air. I fill it using subcool. A thermocouple on each side of the condenser then use an app where I type in the temps and pressures to give my superheat temp. I set it to about 10F degrees of superheat. That said the A Bodies I have done seem to like about 1.8-1.7 cans of R134A to get that superheat value. B Bodies about 2.8-2.9 cans. That ends up being quite a bit less than if you use the 80% less rule.