The instrument panel had blocks floxed on and nut plates installed for the aluminum brackets to mount too. 3 bid on the shield for the rivets to hold onto. The brackets were riveted to the glare shield. I mounted the shield in and out and mounting it on the bench was the best. I swing one end up and into place and then the other end and sum how it all goes into place. Nice when things work out. I was going to make tabs out of glass to hold up under the window but decided to make them out of aluminum and removable. I added flox filler on the top right instrument panel area to fill in the low area and will sand out when cured 2-3 for flox