Ya. I have read about this quite often.
Are these 500k pots available through a local dealer?
Also I hear rather mixed views on weather the caps are worth replacing, some swear by it and some say electronically it does not make a big difference.
RJN wrote
I have seen these "Vintage" wiring kits for sale
I also hear that vintage wiring kits really change the guitar and arent everyones cup of tea tone wise.
There are a few videos on youtube about it, I will try find them