The transponder's baro altitude altitude reference for normal mode-C altitude reporting comes from SkyView, but the full 3D GPS fix for ADS-B would come from the 430W (it's not technically just altitude ADS-B cares about, it's your entire lat/long/alt GPS fix). And to clarify, it's only the 430W, not the 430, that will give the transponder a ADS-B 2020 mandate compliant position, not the original 430 (you've already said 430W earlier but just wanted to make sure it remains clear to everyone).
And yes, when you use the ARINC module, SkyView can display the 430's flight plane both graphically and visually on SkyView's moving map.