The prefacelifts do have adaptive headlights which are very good even though not LED.
I suggest the main consideration if you're going for a 5.5 it is to get one with the updated timing chain design.
Personally I'd suggest the 6.2l of the prefacelifts. It's just fabulous (ofcourse i only have the facelift S version which might not be as good as the non S). There's a 6.2l with 40k miles
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If you can get a deal on this one...i suggest definitely test drive it, you might be surprised how good these ones are