Actually 4th time out there spread out in a couple years but since it near me I'm trying to go more often maybe fishing again theres another post i made about the locking differential with videos if you want to watch
I think there are other posts about that whining which my pathy also has which varies with mileage mostly timing chain tensioner oil filter restrictions or serpentine belt if you look at the posts they will help you
Like the other poster said those get less common so might cost more then a common size i think 285/75/16 is plenty big for a non lifted pathy but either way lifted or not the front plastics need to be either trimmed or melted/formed away from tire