Just bolting into the hole will work, but won't be stiff enough for impacts if you get bumped into. Of course if you get hit in the back you will get damaged either way. So if it's cosmetics your concerned about, I got both 73 and 74 bumperettes with the big rubbers. They just go through the holes and bolt in place. I got a lot on my plate right now getting ready to leave for a month, getting other parts ready and having the flu, but if your not in a hurry, you can have the pair for 25 bucks if you want them. I got a 73 filler plate to, but it will add weight to your car in the rear. Crap, just drive over here and I will give you a 73 bumper so you can get it rechromed. I am never going to use it and members are welcome to come by here and sort through odd ball things. I dont have time to ship big bumpers right now tho. My car is getting color sanded tomorrow and friday, then I fly out to work..yuk.......