Do you have the stock bumper/grill guard? If not, you might consider getting one so as to not beat up the grill. Not sure about the older tractors, but typically the bumper/grill guard is part of the FEL package. Plus there are aftermarket guards that usually mount to the OEM guards to provide even more protection. Some folks fabricate their own as well.
If you don’t need the tractor to look new, perhaps you can bang out the grill you have and grind it a bit to fit and paint it orange. Then mount up an OEM bumper/grill guard, augment it with additional protection as needed and be good to go with nary a concern for bending up the grill again.
Good luck with getting it sorted out.