Welcome to the board Josh.
Any work on the compressor is going to be 300.00 - 500.00. After that, a restoration could add $1500.00 and upwards.
We all have our favorite machines, but is it worth it to you to plunk a couple thousand or much more into your machine, then when it's all done, it's worth $400.00 (if that)?
That's the thought for the day.