You can do this if you get the car up high enough for access. Layout a level straight line across the flange that is flush with the bottom of the bellhousing. Apply a piece of making tape along this line as a guide and use a cutoff wheel in a die grinder to make the cut. You'll have to protect yourself from all the flying hot particles. Once you've removed the flange and section of engine plate, remove the razor-blade like edge with a burr and file, then protect the bare metal with a nice coat of paint. Nothing to it!
