The original version of Texas Lightning was a serious drama called "The Boys", which producer Edward L. Montoro forced director Gary Graver to re-cut and shoot additional comedic footage for. The new version was released to the theaters as Texas Lightning, while the original cut of the boys remains officially unreleased to this day. An illegitimate video was released in Finland in the early 90's. There might also be other European bootleg editions.
Maureen McCormick's first and only nude scene.
The handsome blond-haired, squared jawed guy on the film's poster (which is here on imdb's main page) is not in the movie, nor are the two pretty girls flanking him.