Strangest Dreams: Invasion Of The Space Preachers (1990)

aka: Invasion Of The Space Preachers

A pair of dweebs (Jim Wolfe and Guy Nelson) are trying to vacation in the woods when they discover a crashed spaceship. They help the injured alien, who turns into a beautiful woman (Eliska Hahn) the next morning. Then with the help of their hillbilly friends the three take on the space preachers, led by Reverend Lash (Gary Brown), who are planning to conquer the world. Also with Vince Edwards (uncredited).