Welcome to the Browning Owners Forum mulligan1201 !! Sorry, but I have no experience with that product.
Yes, I'm very familiar with 'add-a-rib. I thought I needed a rib that was 1 1/4" ht. for my bt99, I purchased it What I was trying to achieve with the higher rib was the ability to mount the gun without having to tilt/bend my neck to get the correct sight picture. I did accomplish that, but since the gun isn't made for such a high rib (mine was about 1 1/4") it was difficult to match the results from patterning to actual shooting. they didn't equate. I finally removed the rib and bend my neck into the stock. the included double sided tape from add a rib Does work. I could tell you a great way to mount the rib if and when you purchase an add a rib.