I came across verminary.com/rebellion as a conversion site from D20 to D6.

It uses Star Wars information from D20 published material to translate into D6 material. For those that may not know, D6 is an RPG system published by West End Games. They originally published Star Wars! D6 material under license from LucasFilms, but lost that license when sold to Yeti, a French publisher.

It looks really good, as far as I can tell. This site is very well-thought out. However, since I do not own a D6 rulebook and Free D6 is vaporware, I cannot offer more than that.