1987 Beneteau Idylles engine mounts

I dont know where else to look for these mounts so I was hoping someone here could help I have a 1987 Beneteau Idylles its got a 4-235 Perkins deisel and I need to replace the motor mounts .The dealers offer no help.They have a single stud to the engine and two screws to the hull bracket it kind of resembles a cone Any help as to where I might be able to find them would be great.