Mopar Electronic Ignition Distributor Kit missing a part

The PO bought this kit....when I went to install it, I noticed it was missing the hold down plate.

Was this part supposed to come with this kit ?

Any ideas where I can buy one ...hopefully available in Canada.

The Chrysler part number is :
P4349278 Hold-Down Clamp, Distributor, Chrome, Small Block

Our Chrysler dealership is kind of useless with the older cars.

Thanks
Ian.