How to find TDC on a Hemi

[Mopsquad]

How do you know it's on the compression stroke so the dizzy isn't off 180?

in this case we are identifying TDC to mark the damper.... So it doesn't matter... To determine #1 compression stroke you either look for cylinder pressure or watch the valves.....

Brilliant!   Definitely a BB mopar advantage!
Or if the dizzy is out, you can use a small inspection mirror in the dizzy hole to watch the lifters on the cam, which is essentially the same as watching the valves, but without having to remove the valve cover.