It should fit just fine. It’s is what we originally used.

The GPYes is based on a newer chipset has better EMI shielding and a larger antenna.

Here is a unit very similar to the GPYes.

https://www.amazon.com/Stemedu-GLONASS-UBX-M8030-External-Interface/dp/B07ZPM6HB5/

I used this: https://www.amazon.com/gp/product/B07ZPM6HB5

Stratux claims it is a u-blox unit. Seems to work well enough. I get 10m accuracy with it mounted below a set of Nano 3 SDRs.