You did say that this is a slant six. If you want you can remove the starter and you have a clean straight shot to the flex plate bolts.Just one at a time. Blue loctite and you will be good to go.
Damn. A bachelor's degree in Applied Physics, a Masters in International Affairs...and I can still be really stupid. Plus I won't have to lay down on 20-degree concrete.
At least I was smart enough to put in a mini-starter.
