[HomeBrew] DC Receiver interference

[R. Blackman]

Hello to group, a follow up:
Further to the broadcast band breakthrough in my DC receiver when using a RF 
pre- amp, such as a MAR-4.
I have decided to experiment with Joe Carr's "High pass filter for Am 
broadcast interference", before the MAR-4

there are two inductors of 3.3 uH each, along with the capacitors.
Question:
I have toroids, and I also have axial inductors (that look like resistors).
I can wind the toroids or simply use the axial 3.3 uH axial's  I have on 
hand.

would the wound toroids really be superior performers in this case?.
does it really matter? they will be in a shielded PCB box.

Richard VA3NDO