Universal Seat Bracket Use

The 69 Dart I recently picked up was an original bucket seat car but has a bench in it, I was able to find some 69 Barracuda seats but there were no seat brackets. I don't really know what the brackets are supposed to look like and wanted to see if anybody had used these from Summit, it looks like with some minor modifications they could work. Any thoughts?

Corbeau Sliding Seat Brackets D433
they're likely going to need some fabrication on the bottom to get them to fit to the floor. I've used that style before not this particular one but with the leaver out front and it would hit the bottom of the bucket seat before it would release so needed modification also.
But honestly at this price you shouldn't be doing any modifications. That's about the going rate for some used ones that will probably fit without any adjustment.
I bought a body buckets with tracks for $200...