2012 Peterbilt 367 with ISX

[SB Ag]

Looking for some insight/opinions from some of you that have run or do run an ISX cummins in your trucks. I have found this one for sale, 2012 367 pete with ISX set at 500 hp, about 515,000 miles. Seller says the engine was rebuilt at around 440k. The truck seems to be fairly priced considering the options and condition of it. The truck would be used for hauling a 4 axle end dump and hopper bottom grain trailers. 18 spd, 4.10 rear ends 46k axles, so its spec'd very similar to what I want. Some guys have said to run fast and far from this engine while some guys have no issue with it. From the research I've done it seems like they're more reliable after the 2010 model year. Sure seems like a lot of trucks for sale out there running this engine so I find it hard to believe that they're all bad. Thanks in advance