think you'll have to do a ef86/12ax7 vox front end in a pedal that would be heaven
It is the frontend of an AC30/4, with a 6BR7 tube and not an EF86, purely for the low microphonics, a stomp with an EF86 wouldn't be very good. As far as I can tell these tubes sound pretty much the same as each other, but the 6BR7 is much stronger structurally. Unfortunately, the pins are different, so not interchangeable.
And that's it for the pedal, everything after in the amp is phase inverter and power tubes. There's no treble cut in this as that's after the PI in a Vox, and no brilliance switch, the tone is perfect without any shaping.