Need a radiator solution for a 69 dart

Also……what is the clip that secures the shroud together on the bottom.
I've never seen a shroud with clips to hold it together but I haven't seen everything either.

Once it's bolted in, it's not going anywhere. If it was me, I'd probably just leave it alone.

I've fixed shrouds by cutting a piece of roof sheathing (thin sheetmetal) and JB welding it on the inside out of sight to bridge the gap and hold the two sides together.

There is a 7 blade fan that came with it, but no clutch. Just a spacer.
That looks like it has good pitch.

But is that fan too small for that shroud. It’s about 1” down
The shroud is 20” across
That's a 17" fan in a shroud that will hold an 18" fan. Yes it will look tiny.

I want to put a clutch in there. Maybe I need the 215?
In post #26 you said "2947 Hayden clutch if I remember, and the 215/216 Mopar fan". I hate to say this but you might be going backward on your fan selection.

Rock Auto says Hayden 2747 for a HD clutch to fit a 69 Dart More Information for HAYDEN 2747