Marilyn Manson & Lindsay Lohan -- Possible Co-Stars

4/15/2011 9:00 AM PDT

Marilyn Manson & Lindsay Lohan -- Possible Co-Stars

Who'da thunk -- Marilyn Manson wants a part in a movie that could soon be starring Lindsay Lohan ... TMZ has learned ... a biopic about infamous psychopath Charles Manson.

Sources connected with the movie tell us, Marilyn approached director Tyler Shields about playing Charles Manson's right-hand man Tex Watson ... who was convicted of several Manson murders, including the death of Sharon Tate.

As we first reported, producers are currently considering Lindsay for the role of Sharon ... but Lindsay hasn't officially signed on just yet.

According to sources, producers "love the idea" of casting Marilyn as Tex ... and are seriously considering the proposition.