Pete is very knowledgeable and a great guy, so I'm quite sure if you have a recapped unit that he personally did the work on, it would sound as good as can be.
Although the Eight is undoubtedly built like an early 70's tank, to my own ears, I have to say that my preference is more toward ther latter 70's era, thus with Sansui, I think the G series models were the best receivers they made. In comparison, the earlier models such as the Eight seem a bit old-fashioned, and the sound quality seems to lack the smooth clarity that the later-decade models have, as well as the extra boost in power capability. Ditto the integrated amp models - I have a 1971 AU-999 as well, and likewise its built like a tank, but when it comes to music listening, I definitely prefer the sound of the AU-717 & 919, both of which are superb models and examples of the finest that Sansui made. I'd also put the AU-D11 into that category as well.
The Eight that I have isnt setup at the present time, but when Ive used it in the past, I recall that it had a very bass-heavy sound and would seem to almost clip too easily, so perhaps it was/is in need of some adjustments and component replacement. I also wasnt keen on having the display go off when switched into Aux mode, as I would accidentally then forget that the unit was still On when it appeared to be powered off.
I think it would interesting to do a sound comparison with the Eight's preamp section bypassed and use only its power amp section which might produce a better sound (depending on which preamp you use in its place).
Of course, a decent listening room and the speakers will play a big role in properly evaluating the sound quality. Ever since Ive owned my Infinity Renaissance 90's, Ive been treated to exceptionally good sound reproduction. Just imagine what a 300 Watt Sansui BA-5000 sounds like thru speakers like these: