Yes they snapped off flush with the head- so general consensus is they are not needed?
I should be putting the motor back in the truck within a few days so I'm not going to get a new stand yet- I will for the next project though.
I had a hard time even getting the engine bolted to the stand, bolt holes didnt really line up right and i had to torch one hole a little oblong to make it work.
When i do get another stand i'll be looking for one that accommodates a six cyl a little better for sure!