I know both lights are physically separate but can I buy the same LED's for both or do they require different bulbs? My truck has all mixed matched lights and I'd like to get all the same ones?

Same for high beams, can I just get the same LED lights and then have them aimed differently? (2005 silverado)

 

Good question for your local DMV

 

you can get led bulbs for all 3 but each style will have to be different to fit the stock connector and mount in the lens.