frame help

my 74 montecarlo needs some patchwork on the frame, do i take the body off the frame, if so how do i do it ?
is the body bolted or welded on

thanks

The body is bolted to the frame on body cushions, we here cannot see the required frame work to offer any meaningful advice, have a pro look at it for you.

I would imagine that patchwork is a band-aid, and will not hold up. If you're trying to restore the car, I'd take the body off and take all of the rust off the area, and box it. That's my advice, but I have never tried it.

If you are doing a serious restoration you might consider another "rust free" frame depending on how badly rusted your old one is. If you look through Hemmings Motor News you will see many salvage yards on the South and West that sell rust free parts. That would be a good starting point in locating another one to replace your old one.