Wow and thanks. Best place to purchase parts? Mouser?
Have you tried to run it?
Did you take any measurements?
What kind of DC and Bias (Idle current) reading did you get?
Pardon if you are familiar with the following.
I wouldn't just start replacing (most likely needed) capacitors without knowing if your output transistors, bias networks and all other circuitry is good. DBT is a good test instrument that will tell you if there is a short by glowing almost full brightness. 100-120W bulb should be good. Incandescent only. Bulb should light-up briefly and dim-down. That would be a good sign. It will glow brighter with the signal present. Higher volume = brighter glow. Using variac together with DBT is even better. This would allow you to gradually increase voltage while watching bulb glow as power supply capacitors take their charge. Bias reading will be lower with DBT inline. Please share your progress and good luck!