The block off plates attach with little screws, so I just punched the screws through the dryer tubes to hold it on. Removing the front fascia is just as easy as there is plenty of slack, I don’t have to take the tubes off and just leave them attached to the bumper. But with the size I used, squishing them in the bumper when putting it back on is a pain. 3” would make that much easier. I think I paid somewhere around $400 for the throttle bodies.