I do not have the parts list for this engine but I think the points are the same as for the later small Chrysler engines.
It should be F12153-1.
When I look at the pic and as you says you have spark but it would not fire maybe back fire I think you flywheel key is shared.
The key should set the cam follower and the flywheel in right position and I think it is broken as it looks like it is flush to the cam follower.
The key should be longer so it goes into the key grove in the flywheel.