Very nice work, man i wish i could find a tub like that! I've spent hours and 12 pounds of flux core Mig wire on mine already and I still have 30% left to do!
My truck looked like yours when i got it too ( same color even ) and I was sure not ready for what was under the carpet ..... many hrs & $$ later..
Good luck with your project
This is what I thought was a blazer in nice shape...