Converting 912 to 911, engine mounts anyone?

[Mukilteo911]

Last year I crushed the entire front of my 1970 911 RS lookalike which was just about to be painted. I have a perfect 1969 912 sans interior and want to convert it over to hold my 911 engine so I can make another RS lookalike to replace the one I smashed.
I have asked everyone I know where I can find some engine mount brackets that weld into the frame to hold the 911 motor mounts at the rear of the car. It has been suggested that I use some from a dead 911. I tried that and it is more work than freezing hell.

Anyone know someone who makes such sheet metal for this job ?

Thanks in advance for your input.