Main issue with this one is the mounting posts that original had speed nuts to retain are broken off. You can see 3 locations have screws. I've had this problem on others in the past and was able to carefully drill and tap the boss where the post was. $35 plus shipping if you want it.
Click on this thread: http://www.v8buick.com/index.php?threads/parting-out-1966-riviera-gs.344538/page-2#post-3015722
This is exactly what i need! I'll take it. Just let me know how much the total is shipped to: 539 E 5th St, Neche, ND 58265, United States. And how you'd like to be paid