You are jumping the gun. Wait till you've thoroughly inspected it before you assume the worst. (Remove belly pan, banana wrap)
Most frame issues can be repaired, a new frame is for all practical purposes, out of the question.
The crossmembers and outriggers are of a fairly light gauge steel and I've found that the red iron used in the newer metal buildings can be used for outriggers and probably for cross members as well.
An angle grinder with a metal cutting wheel or even a reciprocating saw (portable band saw is best) will make short work of it.
Below is a pic of an outrigger repair patch I fabricated and installed for another forum member (ALANSD).
is a picture of my own outriggers repaired.