how bad is this rust?

thanks one of many.....

yes, i did a frame rail that was as bad as yours.
my car was a true pink car, and while it would of been easier to just patch it, i listened to alot of members on here, and they were right that do it once and never have to worry about it ever again!.

it took alot of precise work, with measurements and all, but once done, you couuld not even tell it was done!
i also have done tons of body work in the past, but once i started on it, i thought i was in over my head, till i talked to a few that have done it before. if you get frustrated with the gazillion spot welds, then it is time to walk away and take a break from it. it was not hard work at all. just took time. and the best part is that it is all pretty much self-explanitorty!. that frame rail is not eaten fron just acid!. i thought the same with mine. once i took it out, i found out it was rotted from the inside out.
just take your time, and will come out fine
also, you are better off doing it yourself,as a shop will not want to do it unless they are restoring the entire car for you, or they will want 2k and up. that was 2 quotes i got to do mine!