
Looking at the photos of the handful of 2015-2017 QX70S I can find for sale, none of them seem to have the larger brakes. Were the larger brakes only available on the earlier V8 QX70S models, or was this an optional upgrade?
Like you, I do most of my own work as well. One reason I stick to Nissan products is the compatibility of parts across most platforms. I have owned quite a lot of Nissan V8s and so far, I haven't run into any issue issue that was both exclusive to the V8 and a high failure risk. I haven't owned an FX50 yet, and I know that engine is way more unique than the previous and current V8, but it seems to be a very reliable powerplant.