People sometimes forget that there is more than one deer ($500 deductibles start to add up...), and that its better to remove a perfectly good OEM front bumper and sell it for full price, than to have a deer randomly wreck that front bumper, and your radiator and hood, and once in a while, your windshield and maybe snap off the top of your steering wheel so you can't steer with a deer and broken glass in your face/on top of the broken steering wheel, and crash into a telephone pole (OK, maybe that's just me....)
So, Option 1 = Sell OEM bumper for full price for a few hundred on CL, etc...use $ to help pay for new tube bumper.
Option B - Hit deer with OEM bumper, pay $500 deductible, get check for difference for the other damage that tends to happen...fix other stuff, and hope the repairs were good, etc, and that the deer collision didn't lead to a flip over, telephone pole impact, etc....or total out the truck.
As for the rear, as mentioned above...the departure angle improvements are great...and, sometimes you get whacked in the butt by less attentive motorists.
This is the lifted Ford F250 on MT's that slammed into MY butt (Totaled) the night of the accident:
This is my X right afterwards:
If the 1/4" steel plate had not been back there, my butt would look like his face.