70-71 Dart Jack hook

More info:

I have a 72 rear bumper with slots and a 71 front bumper with no slots. I already have a jack for the 72 style slotted bumpers but that obviously won't work on the front. My plan was to modify a 70/71 hook by welding a slotted plate to the back of it. I see new and NOS hooks available but I don't want to spend that kind of money just to mess it up with my modifications.