Score!

[amptramp]

It's a very wise idea to use a PA amp because they are designed to operate 24/7 and at least 12 hours a day.  It looks like you are getting 20 watts out of octal tubes which are probably 6L6's, meaning they are running at 2/3 of their usual rated power for an instrument amp.  Instrument amps are assumed to be used for a few hours a week, so they are run with little derating, the practice of using components at lower stress levels than they are rated for in order to extend life.  Nice score!

[momo]

Thanks, yes I am excited to convert it.
Its much smaller than I thought which is great, about the size of those orange mini amps.
As you see I have the film caps to change and possibly rearranging some ac heater wires that could be tighter wound.
Of course I will listen to it first and see if I need to do it.