speedometer leaking water...

This seems like a weird problem to have, but my speedometer is leaking water. I have a Malibu, and it actually has 2 speedometer gauges, and only one leaks, but it literally fills up, then leaks out a crack in the cover. I’m thinking I obviously need a new speedometer…

My question is, do you think I’ll have to replace the lines and everything… or just the gauge? I’m not sure what comes with a new speedometer. I also need a new temp gauge… any suggestions where to purchase these gauges?

Thanks,
Kal