If you are using a different pan be aware of the fact that not all upper oil pans are the same. The early w116 pans are different then the w123 pans don’t ask how I know this. I also vote fore no sealant on the gasket. If you need a transmission line bolt I believe I have a few of them if you need I can check and drop one in first class mail you should have it in a day or two IM me if you want me to mail one to you. And boy arent some of those bolts a joy to get out.
Dave S