I'm working on a strange science that is down to its last leg so to speak, of the two playfield brackets only one remains and has been welded as a fix in the past.
20200914_145031 (resized).jpg
Turns out the part 0365-00134-0000 doesn't exist anymore but I saw a post saying that the Mantis WPC/95 Long bracket will work with some modification. (https://mantispinball.com/product/misc-playfield-hanger-long/)
Initial comparisons were very promising, although the mantis bracket is twice the thickness. (which is for the best)20200914_145122 (resized).jpg20200914_145143 (resized).jpg20200914_145542 (resized).jpg

20200914_145803 (resized).jpg20200914_145811 (resized).jpg
The only modifications needed to the bracket was to drill a new hole (3/16") 3/4" on center from the existing hole.
The slots on the receiver plate were unfortunately too small for the new beefy brackets. 20200914_150254 (resized).jpg
This meant marking them and filing the slot to accommodate the new hangers. A mini cutting wheel on a dremel would work too.20200914_152019 (resized).jpg
I initially thought I'd have to cut off the long mounting side of the new brackets but they have just enough room to not cause any problems. You can potentially use the third hole too.20200914_154150 (resized).jpg20200914_154156 (resized).jpg

I hope this helps someone else out there

Edit: Added assembly part number below to help web searches

A365-00134-0000