I agree, stay away from the PFC, unless you live in AZ, and your car is BLACK, it's not needed. pre 85 123 condensers are weak, and inadequate when dirty, but when clean, the coil will cool well running R12. the 85 is better still. add window tint as dark as is legal, and you will be even cooler in the car.
the PFC condenser has a serious flaw... it cannot be cleaned. WHEN the compressor fails, the coil will need replacement. when it cloggs with debris, cleaning is NIGH impossible... also, and the volume of refrigerant with the PFC is quite low...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!