Thanks Chris and Kesten and Rafeal
I was actually thinking of a new way of doing this via creating a 16:9 quicktime re importing into FCP and scaling it down and re sending it to compressor then exporting the 4:3 version with the correct setting this way not so much picture is lost left or right as long as you don’t scale down to much it should work well. I’m trying it now I’ll tell you how it goes.