I know this is a bit of a thread revival, but I thought I would post up my results to maybe save someone from the amount of research I did.
I recently mounted a 05-11 ARB Deluxe bumper on my 2015.
Why, you may ask? Because I love the ARB bumpers, always have. But, I could not stand the 2012+ Tacoma models. I even considered swapping a 05-11 front clip onto my 2015 so I could run the old style ARB worry free.
But, after lots of research and few pictures found of similar setups (The Oakley truck and another done by a shop in Texas), I decided to pull the trigger on an older style bumper and give it a try.
Here are the results:
I think the last picture speaks for itself about the improved approach angle of this generation ARB vs. 2012+ models.
As you can see, there is a slight gap where the grill sits higher than on the 05-11 models. However, no modifications to the bumper were necessary for proper fitment. I did need to remove the OEM bumper support below the grill, and slightly trim the supports below the headlights for a tight fit.
I hope this may help anyone considered the older style ARB vs. the newer ones.