Non-polarized doubler capacitor...can I change it?

[AlanInSitges]

Working on a late-50s Philips, 21TE123A (made in Spain for those who care about such things). Aside from using four(!) PY82 rectifier tubes, the power supply features a 200uf non-polarized electrolytic as the pump capacitor in a voltage doubler circuit. I've never seen this before, and as those capacitors are hard to come by I'm wondering if I can swap it for a normal polarized cap with the negative toward the AC.

After googling around a bit the consensus seems to be that I can, but it was less clear if I need to make any change to the value. Running a circuit simulation gives them same result with both types, but I figured I'd ask the experts here. What do you guys (and Sue!) think?