So I had called Matt of Toolshed to ask him a question about rectifiers and he told me he just ,became an OEM dealer for Westerm Electric so I didn't hesitate ... NO shortcuts with this one.
Although those were pricey, NOS E180F and 6688 tubes are cheap and easy to find. NOS Mullards for $6 ? Thank you, nice not getting raped on input tubes. Also picked up some nice Amperex for $20 ea.