I love the forum, I’m really appreciative of all the helpful information I’ve gleaned on here. However, I’m in the process of rounding up parts to convert my 2014 Silverado front to the 16-18 and am wondering which radiator access cover to use? Apparently the part number on the 2016’s (23318844) is different from the one used on the 2017’s & 2018’s (84087027). Can anyone tell me what’s the difference and which one to use? Hoping some of you that have done the conversion could enlighten me.