Bumper help question 66 Dart

Im installing my front rechromed bumper that I purchased and I found that the bumper does not have the tabs on it to mount the front parking light assemblys. Its on a 66 Dart. Here are some pics of the bumper with parking light from old bumper
View attachment 1715285533You can see the screws that hold the parking light in place and the tabs that are part of the bumper to mount the assembly.
Here is the pic of the new bumper.
View attachment 1715285535
No tabs on the bumper. So now I need to decide what to do. I contacted the vender and he said send it back and he will send another one that has the tabs, however he wont cover the shipping back which I would guess to be at least $50-$75. Or could I make some brackets and epoxy them to the bumper with the 3m 8115 bond. I considered spot welding brackets but know it will make a mark on the outside even if I hold a cold wet rag on the chrome side. The vender said he would be ok with me trying this but i wonder if he would change his mind should it not work.
What do you think I should do?
Rod

Pop rivets.