I went ahead and tried this mod. The parts I used are:
General Diode HER108
Nichicon (KX) 330u, 220u and 100u + Audiophiler 4.7u
Mills 560r 5W
Tackman REX 270k 1W
Sonically, who can say? Too much time went by while the amp was down. The amp was dead quiet before and it still is, and the image is as wide as it ever was, and it's centered and stable on transients. It's also very fast. Luckily, there is no difference in the 2 b+ voltages, they are both 169.9 vDC. So I guess you can get there from here.
Greg