- There were a handful of minor variations produced with slightly different housings (some had active cooling fans and heat sinks mounted on the housing, some had a dichroic coating on the lens, etc), and I think that there was a "version 2" variety which used an H4 bulb. If I recall correctly, Ric ultimately kept the v2 housings on his gorgeous Miata.
Here are a few images of my old RSA units for your consideration:
Dichroic coating
Heat sinks and fans
High Beam Pattern
Low Beam Pattern (they aren't really aimed high, it just looks that way because I was parked on a grade)
Low Beam Pattern along wall