It’s your $$ May point was have old capacitors in it you are inviting disaster
it’s like having 25 year old tires on your car, the dielectric and cap inside is falling apart ,especially going back 20 + years capacitor technologies was not that great.
I have been into Audio for over 40 years and have tech friends we have literally cut capacitors apart , unless you plan on having it upgraded when you buy it then
not such a good deal and bunches of other parts internally are on their way out
it’s like buying a older car with 150k on the mileage , and with audio one bad part can take out several with it , been. There done that . Much better off buying new
you didnot mention. How much $$ you were spending .it will cost you minimum of $1500 to rebuild this amp