thanks guys for the input.

It sounds like a mig welder is the way to go. I have an air cutting disc tool I bought Habor fright and a gas cutting torch.

I will look for a panel flanger, not sure what that is but i will figure it out that is very helpful. Also, how do you line up........say like a floor panel? do you cut out the old and leave like a 1/4 " extra?
Are there any tricks to that?

I will practice on some other pieces before I tear into my car. Thats why I am just doing the floor boards, truck. My 69 camaro needs new quarters as well but I am going to leave that to the pros.

ANy other adive would be greatly apprecatied. Thanks again for all the advice!

sanpedro