[morzh]

125B or 125C, both would do. Same price. 125B is a bit smaller: see the mechanicals.

https://www.mouser.com/c/passive-compone...=Push-Pull
https://www.mouser.com/ProductDetail/Ham...2Zzg%3D%3D

You need that.
Do not get 125CSE - it is for Class A single-ended amps.


If you want an inductor for the filter, you could use this:

154E by Hammond
https://www.mouser.com/ProductDetail/Ham...zf6Q%3D%3D

It is small.
If you find out there is no space, use a resistor.
I do not know what the resistance of the 1st field coil. I doubt it was 3.2kOhm as the other shown in the sch, but the DC resistance of the 154E is 1.67kOhm and you could add a small 1W resistor in series if you need to meet the higher resistance number.



PS. Do not take it as "buy" directive, do some research first. I only gave you some general pointers.