Front wing indicators are also sold as generic ones at car parts shops. At least that is how I bought two. The wedge ones are, I think, cortina wing indicators and that is perhaps another possibility to track a them down.
Did try to e-mail you but not sure if my e-mail is working, anyway, boot spoiler and stainless kickplates (390 etched into them) yours for the taking, am trying to clear my rather small garage (only just wedge sized in fact). Will try again to e-mail you.