I have just had another look at my set up
The engine mount has a 'U' shapen cut out on the back edge of the standard engine mount then it is reinforced with another set of plates folded and welded to the mount to strengthen it. So it's a standard engine mount that's been cut and braced. I also modified the 'stand off' that comes up off the engine crossmember, the one that holds the engine mount. They are also plated and braced because I think they were a weak point in the set up and I had herd from others that they can crack.

Hope this helps.