1966 Barracuda Seats Question

I'm getting 66 Barracuda that is missing is all of the bucket seat mounting hardware. No tracks or risers or whatever you call them. I have spares from my 65 but that stuff doesn't work on the 66. What do I need to look for? Is there other A bodies that have the same tracks and stuff or is it just 66 Barracuda? And if anyone has some for sale let me know.