Altezzas are made by Inserting a lens where the normal brake and running lamps are, these are 2 piece lenses depending on

if they are to be clear or a different color IE red, first would be the prismatic lens, then the colored one, optional

is to put lenses where the reverse and blinker bulbs go as well.  The outer lens is custom hand molded, non yellowing,

impact resistant Lexan.  These also come with black border and rubber trim

to prevent dust and moisture from entering the lens.