Thank you very much to everybody for your informative answers!
Since using Low Impedance caps in the PSU would improve a reliability of the Mac, I think I can replace ALL capacitors with Low Impedance ones, except the big capacitor (400V 620 uF), which will be replaced by Nichicon GL (400V 680 uF). Am I correct so far?
Also, there are two 350V / 4.7uF capacitors in the high voltage section (please, see the picture, they are black coloured).
Is it ok to replace these two high voltage caps with Low Impedance capacitors as well?

Since using Low Impedance caps in the PSU would improve a reliability of the Mac, I think I can replace ALL capacitors with Low Impedance ones, except the big capacitor (400V 620 uF), which will be replaced by Nichicon GL (400V 680 uF). Am I correct so far?
Also, there are two 350V / 4.7uF capacitors in the high voltage section (please, see the picture, they are black coloured).
Is it ok to replace these two high voltage caps with Low Impedance capacitors as well?
