Sorry I can't help you much on Salvage yards and the process involved.
If memory serves me right from the 1070 we had I think you will need to replace the whole platform to do this. Only the cowl stays. Not sure about the pedal area under the cowl.
Have to ask what you want in the long run here? If you are wanting it for collector value, yep you want to change out this stuff. If you just want the open air feeling of a open station tractor here is another idea. Just pull all the glass and doors/windows out. Then you have a shade cover and ROPS.
Just a thought