Is this frame repairable

I put 1/4” plate on the old frame so it doesn’t loose its alignment. Have every plate in place and spot secure before you weld 100% don’t concentrate on one area when doing so it doesn’t twist.
That’s the only side that had rusted out but I did everything that I can fix regardless since I have the bed out.
The finish product after Corroseal, primer, black paint, and rustoleum undercoat.

 

I buy stuff from harbor freight use it for my jobs and return it all the time lol. They ask 0 questions