Does anyone remember this late 80's/early 90's movie about truck driving brothers?

Question

In this movie they were very goofy acting brothers, possibly twins, that were a truck driving team. They were kinda buff, with long dark hair. It was a comedy where they picked up a girl that was a computer nerd runaway and someone was chasing them. I remember watching this when I was younger, and would like to check it out again. Please, does anyone remember this at all??

Answer 1

Think Big (1990)

IMDb synopsis:

A teen genius (Ari Meyers) escapes from a think tank with the plans for a secret weapon. On the run, she stows aboard a truck driven by two slow-witted brothers (Peter and David Paul), who are transporting toxic waste across the country. Martin Mull appears as the mentor of the think tank; Claudia Christian, as the school psychologist; and David Carradine, as a repo man.

Also in the cast are Richard Kiel, Richard Moll, Michael Winslow, Tony Longo, Peter Lupus, Tommy "Tiny" Lister and Rafer Johnson.

Answer 2

I don't remember that one.  

But look on the Internet Movie Database to see if you can find it.