Manifold Repair

DD, I can’t advise you on the welding, but I cleaned mine really nice in a tall tray of cheap vinegar.
I took a kitty litter cat box, got a few gallons of cheap vinegar at the grocery store, and let them soak for a couple of weeks. Occasionally, I would remove some vinegar and replenish with fresh vinegar. With almost no labor and under $15, they came out nice. The vinegar dissolved the rust. I shot them with a couple of coats of Eastwood’s exhaust paint. After a couple hundred miles, they still look great! You can kind of see them in this picture...

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That looks to nice for me car.... Advice from someone else?

Just kidding, that's a great idea, also have heard to soak them in vinegar before, or Coke (the drinking kind). Maybe this is what I will do as I have headers on my car and these aren't going back on anytime soon. Just gives me another project to do while enjoying the car, plus helps me learn something new.