your better off with the dji goggles v2 duel band antennas as they are linier just like the whip ones on your drone unless you can find 2 lhcp ufl connector antennas for the 03 and then youll be cooking 👍
but in the case of getting the small ufl lhcp antennas for the 03 you would have to use elrs or crossfire as the dji controller runs 2.4ghz and them iflight antennas only run 5.8ghz hence why you yould be better off with the stock dji duel band5.8ghz/2.4ghz antennas as because of the cross polarisation of your antenna usage there your more likely to loose signal in your goggles vice verse if i was you i would just put the dule band original antenna back on the 03 and use the original goggles v2 antennas thats the cheaper way of getting the best range/penetration with the items you already have. I hope this helps, Happy flying buddy!
There is a procedure that you have to do (re-binding is part of it), but you can switch back and forth. I tried with my digi adapter from running analog rapid fire on these dji's, but liked my analog o4x better for my analog stuff because of the focus adjusters. But I was able to re-bind the goggles back to the DJI FPV.
Not sure about the v2 goggles, but integra and goggles 2 don't benefit from antenna mods. The best thing is ham unlock. CE mode is horrible and dangerous
Yea the unlock did a lot for these goggles but I do think that patch antennas were a good upgrade for the v2 goggles i get a more clear and steady signal transmission