Yes there is another bracket, hiding behind the IP. It does the rear supporting of the IP. And Yes it fits my 1Y block. However that all quickly got scrapped when I decided to try to install the timing cover inner metal.
Last Mockup with inner timing cover revealed I can not use the MK1 1.6 Diesel IP/engine mounting brackets. Now going with a gasser passenger side engine mount and a small diameter hole, cast iron AAZ IP mount. Smaller hole is same as the 1.6 injection pumps. I also flattened the front end of the gasser side engine mount in the press. I was looking for an alternator bracket to hack off the side that goes under the gasser engine mount but didn't find one in the hoard. Considered washers but then just flattened it in the shop press. But I did score a Non-AC Diesel alternator bracket I did Not know I had. I have one on the 1.6TD in the Jabbit but remember needing to source it on that build. Those AIN'T easy to find anymore.
Quickie mock-up, only pic I took with inner timing cover fit and the AAZ small hole IP mount that fits the 1.6L IP.

Blasted and most painted, another mount pressed in that gasser bracket too
Mount press tool and air over hyrdaulic press... like cheating. VW tool number US745



Flattened gasser mount

All blasted and now painted, just need to paint the opposite side of the inner timing cover yet.

And I was real happy to find this mount in the hoard. Didn't know I had it.

New pistons should be here Today! 3:30AM, off to get "some" Sleep.