I have a pair of those in the back right now! MHF2 connectors are correct for BCM94360CD.

Having just done some Googling I'm having trouble finding MHF2 internal antennas as well. All the ones I find are MHF4 (which fits the BCM94360CS2).

I should update the post/guide with some of these findings. Maybe best to go with MHF2 cables (I got these and they're great quality) and try to find "standard connector" (RP SMA) antennas that are as flat as possible (don't actually buy this one) for easy double-sided tape mounting.