Yes they are available at most model A part suppliers and on eBay for about $20 to $25. However, I have heard from a couple of people that bought them that they are junk (broke quickly). I think you would be much better off finding some original latches and rebuilding them if needed (that I what I am doing). Usually the slide latch is worn down and needs to be built up with weld and dressed down. The latches are very simple. I have seen them on eBay every 2 or 3 months or maybe put an request on the Fordbarn wanted section for some.
