[morzh]

#75 is not critical and can be anything, can be also of higher capacitance, can be of any ripple rating (I wouldn't go below 20mA) and of 50V WV rating. No harm here in using a cap with any voltage above.

The critical one is #87. I would not use a generic 10uF 450V here. If at all possible, use a large film cap, if not - I use Panasonic caps, there is the highest ripple rating ones at 20uF 450V, rated at about 450mA at 120HZ; I use two in series.
#88, the one after the filter choke, could be just that, 10uF 450V but I still prefer high ripple rated type, and if you use 20uF without serializing, it is still good. Though ripple here is much smaller, it still is the bulk capacitance for the whole radio, so the higher grade it is, the better.