Personally, I liked the 10,000uf @ 160volt ones you can get. I see you can get a 15,000uf that looks size wise OK. I didn't notice much at all on the Digikey or Mouser sites. Aren't the originals like 2.50" x 4-1/8"......
Found what I did:
I think one of the 1B’s I did had that set of transistors you mention above.
Found the info on the 1B and I showed a 2N4036 not a 2N4026 along with the others you said plus a couple 2N4250’s.
Don’t recall the exact ones but did for the most part used the same ones. There were different versions of this that had “older” transistors but this one had newer ones so it was easier I recall.
I moved on from it, I didn’t have what I needed to get the output assembly apart. I’d probably set the current as your left channel showed, if it was mine anyway.