Which nylon push-on fittings needed for GSU 73?

[Prescott Flyer]

I'm in the process of getting an overhauled GSU 73 back from Garmin. I want to replace the brass compression fittings used to connect the pitot and static lines to the input ports on the GSU 73 with nylon push-on type fittings. I understand these fittings are preferred as there is no need for any thread adhesive or Teflon tape.

Would anyone be able to point me to the right parts to order on Aircraft Spruce?

Thanks,
Jeff