Okay, sorry to be off-line for so long, some medical, some Bob's not having time to make the brackets.  Good news! We pulled my seats today and he is in the process of making jigs to start building seat bracket sets.  He just finished a fantastic looking Chevy Cameo Pickup, and has some time to start building the brackets, and even thinks he has a way of building them that won't require welding to the Dakota sliders.  He's building the jig in these pictures and estimates he can make 5 or more a