LED headlights, rear lights, front parl lights and interior for 1964 plymouth Valiant

I want the head lights to look stock but be high level LEDs.
They don't exist. At least not yet.

You didn't mention the year, but regardless the original lens would look similar to this. GE, Westinghouse or TungSol.
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High quality LEDs are made by JW Speaker, Trucklite, and Peterson.
The light from the diode is more of a straight line, so to spread the light in the right pattern, the lens is very different.
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See links in Stern's post here