64 barracuda seats in a 67 valiant?

Well you can make anything fit if you want it bad enough. What you will find is you end up with a wider gap between the seats or to much space between the seat and the door. If you punch your own holes in the floor it will work out much better than if you try to use either the outboard holes or, if it's a bucket seat car, the inboard holes . I encountered this when I put 66 buckets in my 65 both cudas same floorpan but different hole configuration.