I've got a few scrap FoMoCo distributors here that I can cannibalize for a spare screw if you don't have any joy
Out of interest, which kit did you go for?
Arwyn
Thanks Arwyn. I went for the simonbbc 'Powerspark' kit. I'd used his stuff before on my Land Rovers - and apart from a duff unit which he replaced straight away (this was about 15 years ago) I'd not had any trouble.
This fitted easily, and seems to run nicely (only on the drive at the moment) after I set the timing. Thankfully, rev counter is also working OK - I'd read that some kits can affect the earlier rev counters.