The main acty person is Michael Biehn who was actually quite young at 24, especially when comparing his squashy childface in this to his gnarly manhead in Terminator made four years later.
Anyway, it's really bumular.
http://www.imdb.com/title/tt0080880/
2/10
"Yeah, I pulled out and invested it all in custard. I'm now a pudding millionaire"
Completely heterosexual and everything
"Am I Jeffery from Rainbow?"
"No, you're Kyle Reece"
"Jefferies don't feel pain, I do!"
This guy is meant to be a member of a high school gang. Seriously.
"By the standards of this film, I'm probably about 19."
"Fo shizzle, homeboy... Fuck, me hip's gone."
Marks out of ten for casting?
Perkin.