I would think that the round circular clip would still work it the square hole. Might be best to check if you can that the holes are in the right spot. You can get them from super cheap auto.

the rectangle hole on the frame in the car are about 5mm x 10mm rectangular
same as that first pic same size
looks like they line up the same but the round clips wont fit 
gota see if i can find some sort of clips that fit the round hole in the trim and also fit the rectangle slot
 
 

can you open up the hole enough to get the rect clips in.

GTV6
can you open up the hole enough to get the rect clips in.

you probably could get a dremmel and modify it  ..  but i only have five clips  need 5 clips per 1/4 trim cant find any of them anywhere might have to try ring yesterford or drive down to small ford wreckers  

Glass over it then dremel the rectangle slot .

I just got a set of Alderidge delivered for a Capri project, Happy with the product, although the vinyl grain is Euro not the same as the Aussie original.
 
On my other Capri I have a set of Polyweld  repo door trims which match the Aussie vinyl grain, only downside the chrome moulding is starting to crease/lift a bit, but been on the car over 6 years now.

i ended up buying some old stock ford ones that fitted wasnt original ones but are similar to the torana ones
 
http://www.ebay.com.au/it...e4b:g:4cgAAOxy7f5SL9uc