I decided to use a Jesel cam belt drive instead of the Australian unit. I didn't like the interference with the ATI SuperDamper.
My block did need a little more clearance work to fit the Jesel baseplate. Between the bolt holes at 45 degrees to the top.
Just looked at pictures of my INDY block, and it doesn't have the oil boss, and it looked like it was clearanced at the top of the cover like yours just a bit.
