Your question is technical, so please humor a rather techncal answer. The origial Pas volume pot had eight lugs. The additional two lugs go to the .1uf caps and are the loudness take off. If you do not require loudness, either of your six lugs stereo pots may work.
Why do I say "may" work. The original volume control is 250K. Other values will have a deleterious effect on the already dodgy RIAA eq of the phono stage. If you don't use phono, then you can easily go with a 100K ohm pot. There is also a mod, which can be found on the Dynaco Doctor website which corrects the inaccuracies in the Dyna RIAA curve and is designed to be flat into a 100K ohm load, so this would work as well.
You can also get a PDF copy of the original instruction manual for free at the same site and this should help you understand the circuit. Earlier PAS 2 preamps had .02uF coupling caps on the line stage and phono. No good. These should be replaced with .47uF film caps and the output coupling cap on the phono stage should be jumpered, it doesn't need to be there. You may also want to consider replacement of the Selenium rectifier, as it is a fire hazard and toxic when it burns, as well as bypassing the tone controls, blend and balance control. Oh, scratch filter as well.
Why do I say "may" work. The original volume control is 250K. Other values will have a deleterious effect on the already dodgy RIAA eq of the phono stage. If you don't use phono, then you can easily go with a 100K ohm pot. There is also a mod, which can be found on the Dynaco Doctor website which corrects the inaccuracies in the Dyna RIAA curve and is designed to be flat into a 100K ohm load, so this would work as well.
You can also get a PDF copy of the original instruction manual for free at the same site and this should help you understand the circuit. Earlier PAS 2 preamps had .02uF coupling caps on the line stage and phono. No good. These should be replaced with .47uF film caps and the output coupling cap on the phono stage should be jumpered, it doesn't need to be there. You may also want to consider replacement of the Selenium rectifier, as it is a fire hazard and toxic when it burns, as well as bypassing the tone controls, blend and balance control. Oh, scratch filter as well.