Yes, it requires a tune. The filter won't affect the tune at all, but if you have concerns you can install the new filter and send data logs to your tuner so they can take a look to see if any changes are necessary.
I have whichever fits the 2018+. Everything fits except the air filter that comes with the JLT. You'll have to buy a slightly smaller one, but it's hard to find one that's a bit shorter that will still fit the huge opening of the JLT. This will fit:
I ordered it from my local Ford dealer. I just asked them to order the airbox assembly which I thought would come with the snorkel but it didn't.
Here's pictures of the boxes with the part numbers, I think I remember paying about $200.