Hello there,
I have canniblised a few sets in my time and I keep everything except the resistors and grotty capacitors.
Earlier this year I had the chassis of a stereo radiogram that had 2 EL84's and 2 o/p transformers and a good mains transformer.
I saved a 19" rack mounting power supply from the bin at work and with a few new panels and a few bits from RS i have now got an excellent home made stereo HI-FI amplifier for around £8
Christopher Capener