Cap Replacement

[OldTickTock]

It's down to you really there are all sorts I mainly use Metalized Polyester Film (second in from left top, the yellow tubular axials), but you could use Metal-Foil Polypropylene Film. In certain circuit stages you use Dipped Silver Mica Capacitors, Ceramic Disc Capacitors etc.

I have vintage NOS mullards that I use too. Get a varied stock is all I can advise

Below is just a small sample selection of some of the types I have
Chris