Finally got all the parts to do this work. Managed to get all these caps inside the chassis.
I moved the output transformer towards the amp's back (bottom in this pic) wall and the bias-supply terminal strip to the right. Then had room for the large 80/370VAC motorrun cap, a 6/370 MR cap, and a new 470/450 initial cap, a Panasonic TS-ED. Atop the latter are the Fairchild Stealth diodes. To the right of the big MR is a 0.1/400 SoniCap Platinum bypass cap. The 1st dropping resistor is a 100-Ohm Mills MRA-5; the 2nd is a half-Watt, 4.7K PRP. The BlackGate 22/350 decoupler is more visible (slightly out of focus) in this pic.
All this stuff is mounted with 3M double-sticky foam tape. Used OCC wire for what I added--14g. for the initial common bus and 18g. for the decoupler connection.
Also installed one pair of Cardas gold-over-copper binding posts (type CCGG... http://www.soniccraft.com/products/connections/bindingpost/cardas_ccgg.htm
...), since I never received the pair of knurled nuts to complete my 2 pairs of MusicPosts. The Cardases sure are purdy!
These are the short versions and required slight modifications, plus the optional single washers, to install.