door panel clips

Hello,
The door panel covers on the 68 Barracuda are actually in decent shape.
It is the OE hardboard backing that the cover attaches to that is cracked and
water damaged.
This car has the deluxe interior so the door panels have the map pockets.
I am going to try to re use the existing covers over new hardboard.

One question that I have centers around the clips that hold the door panels to the door.
The OE clips fit into a milled slot, without special tooling the slot looks like it would be difficult
to duplicate. There is a photo posted below.

Has anyone used modern panel clips like those shown on this link?
Door & Trim Panel Clips

I believe the ones with the 3/4 pie head screw in through a slot cut into the panel backing, there are others that may be two piece,, anyway looking at these,

any input on the replacement panel clips or the panel renew process is appreciated.

door panel.jpg