Rust in my frame?

[uskatebetter]

Ive got rust on the inside of my frame, and its already eaten a few small holes.
I was wondering if theres anything I could do to prevent this from happening anymore?

thanks.

[chargerboy69]

I had that as well. Mine was worse then yours though. I just replaced my frame rails. Then painted them with Por 15.  Looks like you have a lot of floorpan work to do as well.