Factory A/C in 1967-1972 Darts

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.