Looks like S&S has released their M8 replacement cases. It looks like they have the OEM oil feed at the rear of the case. I'm surprised they don't have a Timken option.
https://www.sscycle.com/products/mk-series-touring-crankcase-assembly-in-black-for-2017-up-m8-models/ (https://www.sscycle.com/products/mk-series-touring-crankcase-assembly-in-black-for-2017-up-m8-models/)
(https://imgsh.net/i/e9JaIrA.png)