Hi Matt,
Those CTS pots are the same that Fender use in their USA range basses so no point in changing them - assuming those you have are the same value - 250Kohms.
That cap is a 0.1 Sprague which will certainly give you the fat dark tone when the tone pot is rolled back, shouldn't make it muddy though, you could do far more with your amp EQ settings than changing anything in your bass, although of course different pick up have different frequency outputs.
Cheerz, John